# How to use the Random Seed() method in Python

by Abdul Rawoof A R Updated: Sep 19, 2023

Guide Kit

A random seed is an initial input or value used in a random number generation. It starts the generation of a sequence of pseudo-random numbers. This concept is prevalent in computer science and statistics. Here's a more detailed explanation:

• Random Number Generation: Computers are deterministic machines that follow precise instructions. Thus, generating random numbers is a challenge. Instead, algorithms generate pseudo-random numbers using algorithms that make them appear random. These algorithms use an initial value, known as the seed, to start the process.
• Reproducibility is when you get the same random numbers using the same seed value. It is important in various situations to ensure consistent and predictable outcomes.
• Video games: A fixed seed means players have the same world and events when playing together.
• Randomness Control: Seeds also allow you to control randomness. By changing the seed, you can get a different sequence of pseudo-random numbers. If you want your application to have some randomness but still want control, this can help.
• Security: In cryptographic applications, a secure random seed is crucial. It secures pseudo-random number generators (CSPRNGs). We use strong initial seeds to prevent prediction and manipulation when generating numbers.

When you use a custom seed value, Python's Random generator doesn't save the seed in memory. To maintain security, avoid using the pseudo-random generators in this module. You use the seed function to save the state of a random function. It can generate the same random numbers on many executions of the code on the same machine.

Here is an example of how to use the Random Seed () method in Python:

Fig: Preview of the output that you will get on running this code from your IDE.

### Instructions

Follow the steps carefully to get the output easily.

1. Install PyCharm Community Edition on your computer.
2. Create a new Python file(e.g. test.py).
3. Copy the snippet using the 'copy' button and paste it into that file.
4. Run the file using the run button.

I hope you found this helpful. I have added the link to dependent libraries, and version information in the following sections.

I found this code snippet by searching for 'Generate Random Seed In Python' in kandi. You can try any such use case!

### Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

1. The solution is created in PyCharm 2022.3.3.
2. The solution is tested on Python 3.9.7.

Using this solution, we are able to use the random seed() method in Python with simple steps. This process also facilitates an easy-to-use, hassle-free method to create a hands-on working version of code which would help us to use the random seed() method in Python.

### FAQ:

1. What is the purpose of the pseudo-random number generator in Python?

Python uses a special number generator called a PRNG to create random sequences. We call these generators "pseudo-random" because they are not random but rather deterministic. If you provide the same seed, you will get the same sequence of numbers every time.

2. Are any extensively tested random number generators available for Python?

Yes, you can use tested random number generators with Python. Python's standard library includes a module called random. It provides a pseudo-random number generator (PRNG).

3. How can I find the module with the Mersenne Twister random number generator?

Using Mersenne Twister, you can use Python's random module to get random numbers. Python's random module uses the Mersenne Twister as its default random number generator.

4. What are some of Python's most commonly used random number generation functions?

• random.random(): Generates a random float between 0 and 1.
• random.randint(a, b): Generates a random integer between a and b (inclusive).
• random.uniform(a, b): Generates a random float between a and b.
• random.choice(seq): Returns a random element from the given sequence (list, tuple, or string).
• random.shuffle(seq): Shuffles the elements of a sequence in place.
• random.sample(population, k): Returns k unique random elements from the population.

5. Why is it important to set a random seed value before using a PRNG?

Setting a random seed value before using a PRNG is important for several reasons.

• Reproducibility
• Debugging
• Testing
• Security and Cryptography
• Simulation and Modeling
• Game Development
• Machine Learning

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