Python "TypeError: ' Nonetype ' object is not iterable" error parsing

Respect original blogger, original link: 9953225

Resolution

Generally, the function returns a value of None and is assigned to multiple variables.

Example look at the following:

C=0
def test ():    if c = = 1:        a = b = 1        return A, BA, B = Test ()

When you call with a, B = Test (), you get an error: TypeError: ' Nonetype ' object is not iterable

In a Python judgment statement, when the IF condition is not satisfied and there is no else, it returns none, even if no return will default to None

In this case, a, B has given the none value, the above error occurs.

So the function return value must take into account the coverage of the conditional branch.

I am a student who is reading, if there are errors, please the Great God generously pointed out, thank you!

Python "TypeError: ' Nonetype ' object is not iterable" error parsing