smart_contract | EtherDelta smart contract | Cryptocurrency library
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kandi X-RAY | smart_contract Summary
EtherDelta smart contract
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QUESTION
I`m want to write the script for Check bitcoin private addresses for money from csv file.
Python 2.7.16 64-bit on Ubuntu 19.04
...ANSWER
Answered 2019-May-07 at 06:30If you provide some sample data from your results.csv file it will be easier to give you an accurate answer.
In general your line:
QUESTION
Since Python Serpent Compiler is considered outdated and not secure by Vitalik (also confirmed by this audit and here), it is more recommended to write/deploy Ethereum smart-contract from python with Vyper compiler.
It is sure that Vyper works on the Ethereum decentralized platform, but I would to know if Vyper is also compatible to deploy smart contract on the Ethereum Classic decentralized platform ?
If yes, how to setup Vyper for this use case ?
If no, what is the new python supported compiler to deploy smart contract on Ethereum Classic ?
...ANSWER
Answered 2018-Sep-03 at 00:33To the best of my knowledge, both ETC and ETH use EVM for their code, and neither have diverged in their implementation of the EVM. This means that no extra setup should be necessary to get Vyper code running on ETC instead of ETH.
QUESTION
My work is concerning Smart Contract dev. using (py)ethereum and serpent,
When reading "A Programmer’s Guide to Ethereum and Serpent", I saw on point 5.9 that :
[...] Persistent data structures can be declared using the data declaration. This allows for the declaration of arrays and tuples. [...]
and:
[...] For simple storage, self.storage[] is useful, but for larger contracts, we recommend the use of data (unless you need a key- value storage, of course) [...]
Code example:
...ANSWER
Answered 2018-May-20 at 06:12IMPORTANT : Please note that according to this Vitalik Tweet, Serpent is now an "outdated tech".
The Serpent README
has been updated to :
Being a low-level language, Serpent is NOT RECOMMENDED for building applications unless you really really know what you're doing. The creator recommends Solidity as a default choice, LLL if you want close-to-the-metal optimizations, or Vyper if you like its features though it is still experimental.
If you want to code Ethereum contracts from Python in order to release a production product, start to think about to migrate to Solidity or Vyper (which is still a "New experimental programming language")
Concerning my question, I finaly found a (tricky/dirty) solution, which consist of encoding the complex data before pushing it to the persistant data storage, then decoding after retrieving data from the storage.
Please see updated code bellow:
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