Python: TypeError: object of type 'NoneType' has no len()

Question

I am getting an error from this Python code:

with open(\'names\') as f:
    names = f.read()
    names = names.split(\'\\n\')
    names.pop(len(names) - 1)
    n         


        

Answer 1

shuffle(names) is an in-place operation. Drop the assignment.

This function returns None and that's why you have the error:

TypeError: object of type 'NoneType' has no len()