What are the best practices for variable scope in Python?

What are the best practices for variable scope in Python?

When working with variable scope in Python, it's important to understand the difference between local and global variables. Local variables are defined within a function and can only be accessed there, while global variables are defined outside any function and can be accessed throughout the module.

Can you give me an example of local and global variables?

Sure! Here's a simple example:

x = 10  # Global variable

def my_function():
    y = 5  # Local variable
    print('Inside function:', x, y)

my_function()
print('Outside function:', x)
# print(y)  # This would raise an error because y is not accessible here.

What should I avoid when using global variables?

You should avoid using global variables excessively, as they can lead to code that is hard to debug and maintain. It's better to pass variables as parameters to functions whenever possible.

Are there any tools to help manage variable scope?

Yes, tools like linters (e.g., Pylint, Flake8) can help identify issues with variable scope in your code, ensuring better practices.