Google Code-in

Pyflakes is a static analysis tool that detects errors in Python code.

Currently, Pyflakes does not detect some invalid uses of the global keyword:

For example, given this code:

def main():
    global x
    print(x)

main()

Python will give an error:

NameError: name 'x' is not defined

Currently, Pyflakes does not complain. We want to add a feature to make it report a message like:

foo.py:2: undefined name 'x'