why does Python lint want me to use different local variable name, than a global, for the same purpose

Question

Given Python code such as

def func():
    for i in range(10):
        pass

for i in range(10):
    pass  

pylint complains

Redefining name 'i' from outer scope 

What is the Pythonic way to write the above? Use a different variable locally, say j?

But why, when the variable means exactly the same in both cases (i for index). Let's say I change all local indexes to j and then later I find I want to use j as the second index in the glocal scope. Have to change again?

I can't disable lint warnings, I don't want to have them, I want to write Pythonic, and yet I want to use the same name for the same thing throughout, in the simple case like the above. Is this not possible?

Answer 1

You can avoid global variable conflict by not having any global variables:

def func():
    for i in range(10):
        pass

def _init_func():
    for i in range(10):
        pass  

_init_func()

Any code that needs to run at module-init time can be put into a single function. This leaves, as the only executable code to run during module init: def statements, class statements, and one function call.

Similarly, if your code is not intended to be imported, but rather is a script to be run,

def func():
    for i in range(10):
        pass

def main():
    for i in range(10):
        pass  

if __name__=="__main__":
    main()