redefinition of unused function

[DeaD_EyE]

def foo(x):
    pass

We have assigned a function to the name foo.
Then you call function maybe one time:
foo(42)



At another place in you code you redefine the function foo:

def foo(x, y):
    pass

The name of the old foo function points now to the new foo-function.
The old function should be garbage collected, because there is no reference to it.

Yes, you can do this in Python, but the costs will be bugs and unexpected behavior.