21 best Python Smart Contract libraries in 2024

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by naveen.kumar@openweaver.com dot icon Updated: Mar 12, 2024

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A smart contract is a computer program that directly controls the transfer of digital currencies or assets between parties under certain conditions.


Actions are triggered by an event, a message transmitted on the blockchain network, and results are guaranteed by the consensus of multiple nodes. Smart contracts can also be used to store information about an application, such as domain registration information or membership records. Smart contracts are used to execute transactions in a decentralized manner.


This means that the validation of a transaction does not depend on a single party, but rather everyone involved in the transaction will validate it. A smart contract can be written in Solidity or any other language that compiles to EVM (Ethereum Virtual Machine) bytecode. The following is a list of the most popular open-source Python Smart contract libraries:

vyper

  1. Vyper wants its code to be easy and safe so there are fewer chances of mistakes.  
  2. It focuses on making the code easy to read and understand so developers know what's happening.  
  3. Vyper tries to use less computer power when running on the Ethereum Virtual Machine. 

vyperby vyperlang

Python doticonstar image 4543 doticonVersion:v0.3.9doticon
License: Others (Non-SPDX)

Pythonic Smart Contract Language for the EVM

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            vyperby vyperlang

            Python doticon star image 4543 doticonVersion:v0.3.9doticon License: Others (Non-SPDX)

            Pythonic Smart Contract Language for the EVM
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                      mythril  

                      1. Mythril looks for common mistakes in the code, even the well-known ones, automatically.  
                      2. It fits into how you work, helping you keep an eye on security while you build.  
                      3. Mythril keeps an eye on security from the start to the end of making your program.

                      mythrilby ConsenSys

                      Python doticonstar image 3425 doticonVersion:v0.23.23doticon
                      License: Permissive (MIT)

                      Security analysis tool for EVM bytecode. Supports smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains.

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                                mythrilby ConsenSys

                                Python doticon star image 3425 doticonVersion:v0.23.23doticon License: Permissive (MIT)

                                Security analysis tool for EVM bytecode. Supports smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains.
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                                          brownie

                                          1. Brownie makes it easy to build smart contracts if you know Python.  
                                          2. It has tools that help you test your program to make sure it works well.  
                                          3. Brownie helps you put your program on the Ethereum network without a headache.  

                                          brownieby eth-brownie

                                          Python doticonstar image 2442 doticonVersion:v1.19.3doticon
                                          License: Permissive (MIT)

                                          A Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine.

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                                                    brownieby eth-brownie

                                                    Python doticon star image 2442 doticonVersion:v1.19.3doticon License: Permissive (MIT)

                                                    A Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine.
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                                                              smart-contracts

                                                              1. Smart contracts automatically follow the rules written in the code.  
                                                              2. They make deals and transactions happen without needing anyone in the middle.  
                                                              3. Smart contracts work on the Ethereum system, making everything trustworthy and decentralized.  

                                                              smart-contractsby TokenMarketNet

                                                              Python doticonstar image 1305 doticonVersion:Currentdoticon
                                                              License: Others (Non-SPDX)

                                                              Ethereum smart contracts for security and utility tokens

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                                                                        smart-contractsby TokenMarketNet

                                                                        Python doticon star image 1305 doticonVersion:Currentdoticon License: Others (Non-SPDX)

                                                                        Ethereum smart contracts for security and utility tokens
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                                                                                  uniswap-v1  

                                                                                  1. Uniswap-v1 was the first to make trading happen automatically on decentralized platforms.  
                                                                                  2. It's a system that lets you swap different types of tokens easily.  
                                                                                  3. Uniswap-v1 has a set formula to keep trading steady and reliable.

                                                                                  uniswap-v1by Uniswap

                                                                                  Python doticonstar image 361 doticonVersion:Currentdoticon
                                                                                  License: Strong Copyleft (GPL-3.0)

                                                                                  🐍Uniswap V1 smart contracts

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                                                                                            uniswap-v1by Uniswap

                                                                                            Python doticon star image 361 doticonVersion:Currentdoticon License: Strong Copyleft (GPL-3.0)

                                                                                            🐍Uniswap V1 smart contracts
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                                                                                                      yearn-vaults  

                                                                                                      1. Yearn Vaults know how to save and make you earn more on what you put in.  
                                                                                                      2. They keep searching for the best ways to make more money across different programs.  
                                                                                                      3. Just put your money in, and Yearn Vaults work to make you extra money without you doing much.  

                                                                                                      yearn-vaultsby yearn

                                                                                                      Python doticonstar image 486 doticonVersion:v0.4.6doticon
                                                                                                      License: Strong Copyleft (AGPL-3.0)

                                                                                                      Yearn Vault smart contracts

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                                                                                                                yearn-vaultsby yearn

                                                                                                                Python doticon star image 486 doticonVersion:v0.4.6doticon License: Strong Copyleft (AGPL-3.0)

                                                                                                                Yearn Vault smart contracts
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                                                                                                                          MAIAN  

                                                                                                                          1. MAIAN is like a security expert for Ethereum smart contracts.  
                                                                                                                          2. It checks the code closely to find and fix common security problems.  
                                                                                                                          3. Gives tools to developers to find and fix security issues in their smart contracts

                                                                                                                          MAIANby ivicanikolicsg

                                                                                                                          Python doticonstar image 504 doticonVersion:Currentdoticon
                                                                                                                          License: Permissive (MIT)

                                                                                                                          MAIAN: automatic tool for finding trace vulnerabilities in Ethereum smart contracts

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                                                                                                                                    MAIANby ivicanikolicsg

                                                                                                                                    Python doticon star image 504 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                    MAIAN: automatic tool for finding trace vulnerabilities in Ethereum smart contracts
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                                                                                                                                              octopus  

                                                                                                                                              1. Octopus is like a toolbox for building, testing, and putting your work on the blockchain.  
                                                                                                                                              2. It's built to be flexible and easy to use for making changes without headaches.  
                                                                                                                                              3. Octopus provides tools to ensure your work is solid and reliable in development and use.  

                                                                                                                                              octopusby pventuzelo

                                                                                                                                              Python doticonstar image 277 doticonVersion:Currentdoticon
                                                                                                                                              License: Permissive (MIT)

                                                                                                                                              Security Analysis tool for WebAssembly module (wasm) and Blockchain Smart Contracts (BTC/ETH/NEO/EOS)

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                                                                                                                                                        octopusby pventuzelo

                                                                                                                                                        Python doticon star image 277 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                        Security Analysis tool for WebAssembly module (wasm) and Blockchain Smart Contracts (BTC/ETH/NEO/EOS)
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                                                                                                                                                                  awesome-buggy-erc20-tokens

                                                                                                                                                                  1. It's a group of tokens meant to show mistakes for learning, not for real use.  
                                                                                                                                                                  2. These tokens show problems that can happen in ERC-20 tokens, helping others learn.  
                                                                                                                                                                  3. The project wants to teach people about common mistakes in ERC-20 token contracts.  
                                                                                                                                                                  Python doticonstar image 541 doticonVersion:Currentdoticon
                                                                                                                                                                  License: Permissive (CC0-1.0)

                                                                                                                                                                  A Collection of Vulnerabilities in ERC20 Smart Contracts With Tokens Affected

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                                                                                                                                                                            awesome-buggy-erc20-tokensby sec-bit

                                                                                                                                                                            Python doticon star image 541 doticonVersion:Currentdoticon License: Permissive (CC0-1.0)

                                                                                                                                                                            A Collection of Vulnerabilities in ERC20 Smart Contracts With Tokens Affected
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                                                                                                                                                                                      eosfactory  

                                                                                                                                                                                      1. Eosfactory is a helper for developers making programs for EOS.  
                                                                                                                                                                                      2.  It lets you safely test your EOS programs before putting them into action.  
                                                                                                                                                                                      3. Supports fast testing and trying out ideas for applications on the EOS blockchain.  

                                                                                                                                                                                      eosfactoryby tokenika

                                                                                                                                                                                      Python doticonstar image 247 doticonVersion:v3.4.0doticon
                                                                                                                                                                                      License: Others (Non-SPDX)

                                                                                                                                                                                      Python-based EOS smart-contract development & testing framework

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                                                                                                                                                                                                eosfactoryby tokenika

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                                                                                                                                                                                                Python-based EOS smart-contract development & testing framework
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                                                                                                                                                                                                          pyteal

                                                                                                                                                                                                          1. Pyteal helps you use the Python language to build smart contracts on Algorand.  
                                                                                                                                                                                                          2. It opens up smart contract development to more people who know Python.  
                                                                                                                                                                                                          3. Supports Algorand's special language for making smart contracts called TEAL.  

                                                                                                                                                                                                          pytealby algorand

                                                                                                                                                                                                          Python doticonstar image 256 doticonVersion:v0.23.0doticon
                                                                                                                                                                                                          License: Permissive (MIT)

                                                                                                                                                                                                          Algorand Smart Contracts in Python

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                                                                                                                                                                                                                    pytealby algorand

                                                                                                                                                                                                                    Python doticon star image 256 doticonVersion:v0.23.0doticon License: Permissive (MIT)

                                                                                                                                                                                                                    Algorand Smart Contracts in Python
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                                                                                                                                                                                                                              scrooge -mcetherface 

                                                                                                                                                                                                                              1. This tool is a helper for making things on the blockchain using Python.  
                                                                                                                                                                                                                              2. It's advertised as having no mistakes or problems, showing it's well-made and safe.  
                                                                                                                                                                                                                              3. Scrooge -Mcetherface helps developers find and fix Ether theft and destruction issues.  
                                                                                                                                                                                                                              Python doticonstar image 86 doticonVersion:Currentdoticon
                                                                                                                                                                                                                              License: Permissive (MIT)

                                                                                                                                                                                                                              Attack tool that loots Ether from vulnerable smart contracts

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                                                                                                                                                                                                                                        scrooge-mcetherfaceby b-mueller

                                                                                                                                                                                                                                        Python doticon star image 86 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                                                                                                        Attack tool that loots Ether from vulnerable smart contracts
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                                                                                                                                                                                                                                                  vandal  

                                                                                                                                                                                                                                                  1. Vandal is like a detective tool for looking closely at Ethereum smart contracts.  
                                                                                                                                                                                                                                                  2. It uses special techniques to break down the code into something understandable.  
                                                                                                                                                                                                                                                  3. Vandal is open for anyone to see and use, following clear rules for sharing on GitHub. 

                                                                                                                                                                                                                                                  vandalby usyd-blockchain

                                                                                                                                                                                                                                                  Python doticonstar image 135 doticonVersion:Currentdoticon
                                                                                                                                                                                                                                                  License: Permissive (BSD-3-Clause)

                                                                                                                                                                                                                                                  Static program analysis framework for Ethereum smart contract bytecode.

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                                                                                                                                                                                                                                                            vandalby usyd-blockchain

                                                                                                                                                                                                                                                            Python doticon star image 135 doticonVersion:Currentdoticon License: Permissive (BSD-3-Clause)

                                                                                                                                                                                                                                                            Static program analysis framework for Ethereum smart contract bytecode.
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                                                                                                                                                                                                                                                                      Rouleth  

                                                                                                                                                                                                                                                                      1. Rouleth was one of the first smart contracts on Ethereum without mistakes.  
                                                                                                                                                                                                                                                                      2. The current Proof of Concept (PoC) shows it working well on the blockchain.  
                                                                                                                                                                                                                                                                      3. It's a tool for blockchain, cryptocurrency, and Ethereum project developers.  

                                                                                                                                                                                                                                                                      Roulethby Bunjin

                                                                                                                                                                                                                                                                      Python doticonstar image 74 doticonVersion:V1.2doticon
                                                                                                                                                                                                                                                                      License: Strong Copyleft (GPL-3.0)

                                                                                                                                                                                                                                                                      Roulette Smart Contract on Ethereum Blockchain

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                                                                                                                                                                                                                                                                                Roulethby Bunjin

                                                                                                                                                                                                                                                                                Python doticon star image 74 doticonVersion:V1.2doticon License: Strong Copyleft (GPL-3.0)

                                                                                                                                                                                                                                                                                Roulette Smart Contract on Ethereum Blockchain
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                                                                                                                                                                                                                                                                                          python-smart-contract-workshop  

                                                                                                                                                                                                                                                                                          1. This library gives a hands-on place for learning to build smart contracts in Python.  
                                                                                                                                                                                                                                                                                          2. It includes tasks and activities to guide developers in creating their smart contracts.  
                                                                                                                                                                                                                                                                                          3. Focuses on how to build using Python, aligning with what's needed in real situations.  
                                                                                                                                                                                                                                                                                          Python doticonstar image 73 doticonVersion:Currentdoticon
                                                                                                                                                                                                                                                                                          License: Permissive (MIT)

                                                                                                                                                                                                                                                                                          Workshop for programming smart contracts with Python

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                                                                                                                                                                                                                                                                                                    python-smart-contract-workshopby CityOfZion

                                                                                                                                                                                                                                                                                                    Python doticon star image 73 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                    Workshop for programming smart contracts with Python
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                                                                                                                                                                                                                                                                                                              erays 

                                                                                                                                                                                                                                                                                                              1. Erays says it has no bugs, making developers feel more confident about using it.  
                                                                                                                                                                                                                                                                                                              2. It helps developers understand smart contracts better by looking beyond the usual code.  
                                                                                                                                                                                                                                                                                                              3. Even if there's no downloadable file, it improves how developers understand smart contracts.  

                                                                                                                                                                                                                                                                                                              eraysby teamnsrg

                                                                                                                                                                                                                                                                                                              Python doticonstar image 67 doticonVersion:Currentdoticon
                                                                                                                                                                                                                                                                                                              License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                              Ethereum smart contract reverse engineering

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                                                                                                                                                                                                                                                                                                                        eraysby teamnsrg

                                                                                                                                                                                                                                                                                                                        Python doticon star image 67 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                                        Ethereum smart contract reverse engineering
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                                                                                                                                                                                                                                                                                                                                  vertigo 

                                                                                                                                                                                                                                                                                                                                  1. Vertigo is great for checking if your smart contract is strong and reliable.  
                                                                                                                                                                                                                                                                                                                                  2. Focuses on testing tools made for Solidity, which is crucial for Ethereum development.  
                                                                                                                                                                                                                                                                                                                                  3. Vertigo offers ways to check for issues and weaknesses in smart contract code. 

                                                                                                                                                                                                                                                                                                                                  vertigoby JoranHonig

                                                                                                                                                                                                                                                                                                                                  Python doticonstar image 58 doticonVersion:Currentdoticon
                                                                                                                                                                                                                                                                                                                                  License: Weak Copyleft (LGPL-3.0)

                                                                                                                                                                                                                                                                                                                                  Mutation Testing for Ethereum Smart Contracts

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                                                                                                                                                                                                                                                                                                                                            vertigoby JoranHonig

                                                                                                                                                                                                                                                                                                                                            Python doticon star image 58 doticonVersion:Currentdoticon License: Weak Copyleft (LGPL-3.0)

                                                                                                                                                                                                                                                                                                                                            Mutation Testing for Ethereum Smart Contracts
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                                                                                                                                                                                                                                                                                                                                                      contracting  

                                                                                                                                                                                                                                                                                                                                                      1. Contracting makes basic operations like creating, reading, updating, and deleting easy.  
                                                                                                                                                                                                                                                                                                                                                      2. Lamden makes it and ensures that your smart contract works well and is safe.  
                                                                                                                                                                                                                                                                                                                                                      3. Though there's less help available, installing Contracting is simple with 'pip install contracting.'  

                                                                                                                                                                                                                                                                                                                                                      contractingby Lamden

                                                                                                                                                                                                                                                                                                                                                      Python doticonstar image 58 doticonVersion:Currentdoticon
                                                                                                                                                                                                                                                                                                                                                      License: Others (Non-SPDX)

                                                                                                                                                                                                                                                                                                                                                      A subset of Python for developing smart contracts.

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                                                                                                                                                                                                                                                                                                                                                                contractingby Lamden

                                                                                                                                                                                                                                                                                                                                                                Python doticon star image 58 doticonVersion:Currentdoticon License: Others (Non-SPDX)

                                                                                                                                                                                                                                                                                                                                                                A subset of Python for developing smart contracts.
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                                                                                                                                                                                                                                                                                                                                                                          cobra  

                                                                                                                                                                                                                                                                                                                                                                          1. Cobra is a Python tool used in finance, fintech, blockchain, and Ethereum projects.  
                                                                                                                                                                                                                                                                                                                                                                          2. It helps build and adapt Ethereum smart contracts, supporting a fast development process.  
                                                                                                                                                                                                                                                                                                                                                                          3. Users can use scripts to deploy and make changes easily, making it flexible and adaptable.  

                                                                                                                                                                                                                                                                                                                                                                          cobraby cobraframework

                                                                                                                                                                                                                                                                                                                                                                          Python doticonstar image 42 doticonVersion:v0.1.1doticon
                                                                                                                                                                                                                                                                                                                                                                          License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                                                                                          A fast, flexible and simple development environment framework for Ethereum smart contract, testing and deployment on EVM.

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                                                                                                                                                                                                                                                                                                                                                                                    cobraby cobraframework

                                                                                                                                                                                                                                                                                                                                                                                    Python doticon star image 42 doticonVersion:v0.1.1doticon License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                                                                                                    A fast, flexible and simple development environment framework for Ethereum smart contract, testing and deployment on EVM.
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                                                                                                                                                                                                                                                                                                                                                                                              smartbugs 

                                                                                                                                                                                                                                                                                                                                                                                              1. Smartbugs have tools to find problems in smart contracts and fix them.  
                                                                                                                                                                                                                                                                                                                                                                                              2. Finds and reports issues in Ethereum smart contracts to make them more secure.  
                                                                                                                                                                                                                                                                                                                                                                                              3. It reviews code to ensure it follows security practices in smart contract development. 

                                                                                                                                                                                                                                                                                                                                                                                              smartbugsby smartbugs

                                                                                                                                                                                                                                                                                                                                                                                              Python doticonstar image 412 doticonVersion:v2.0.7doticon
                                                                                                                                                                                                                                                                                                                                                                                              License: Permissive (Apache-2.0)

                                                                                                                                                                                                                                                                                                                                                                                              SmartBugs: A Framework to Analyze Ethereum Smart Contracts

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                                                                                                                                                                                                                                                                                                                                                                                                        smartbugsby smartbugs

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                                                                                                                                                                                                                                                                                                                                                                                                        SmartBugs: A Framework to Analyze Ethereum Smart Contracts
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                                                                                                                                                                                                                                                                                                                                                                                                                  raiden-contracts 

                                                                                                                                                                                                                                                                                                                                                                                                                  1. Raiden-contracts focus on making transactions faster and cheaper, solving problems with Ethereum's size.  
                                                                                                                                                                                                                                                                                                                                                                                                                  2. Facilitates fast, cost-effective transactions outside the main Ethereum network. 
                                                                                                                                                                                                                                                                                                                                                                                                                  3. It uses state channels, a proven method, to make transactions both safe and scalable.

                                                                                                                                                                                                                                                                                                                                                                                                                  raiden-contractsby raiden-network

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                                                                                                                                                                                                                                                                                                                                                                                                                            raiden-contractsby raiden-network

                                                                                                                                                                                                                                                                                                                                                                                                                            Python doticon star image 41 doticonVersion:v0.39.0doticon License: Permissive (MIT)

                                                                                                                                                                                                                                                                                                                                                                                                                            Raiden Network Smart Contracts
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                                                                                                                                                                                                                                                                                                                                                                                                                                      FAQ

                                                                                                                                                                                                                                                                                                                                                                                                                                      1. What is Vyper?  

                                                                                                                                                                                                                                                                                                                                                                                                                                      Vyper is like a language (but for computers) used to make things on Ethereum. It's like Python and focuses on making things simple and safe.


                                                                                                                                                                                                                                                                                                                                                                                                                                      2. How does Mythril help keep things safe in smart contracts?  

                                                                                                                                                                                                                                                                                                                                                                                                                                      Mythril is like a smart friend that checks computer programs for problems. It looks at Ethereum programs and finds mistakes that could cause trouble.  


                                                                                                                                                                                                                                                                                                                                                                                                                                      3. What tools does Brownie have for testing?  

                                                                                                                                                                                                                                                                                                                                                                                                                                      Brownie is like a helper with tools for checking if Ethereum programs work well. It helps make sure that the things you build are strong and won't break easily.  


                                                                                                                                                                                                                                                                                                                                                                                                                                      4. How does Uniswap do its job?  

                                                                                                                                                                                                                                                                                                                                                                                                                                      Uniswap is like a special place online where you can change different tokens easily. It doesn't use the usual way of trading. Instead, it has a system that makes swapping tokens simple and fast.  


                                                                                                                                                                                                                                                                                                                                                                                                                                      5. Why do we use Yearn Vaults?  

                                                                                                                                                                                                                                                                                                                                                                                                                                      Yearn Vaults are like smart piggy banks. They help your money grow without you doing much. They look for the best ways to make more money with what you put in, like a helper for your savings.  

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