What is a 'NoneType' object?

Question

I\'m getting this error when I run my python script:

TypeError: cannot concatenate \'str\' and \'NoneType\' objects

I\'m pretty sure the \'

Answer 1

It means you're trying to concatenate a string with something that is None.

None is the "null" of Python, and NoneType is its type.

This code will raise the same kind of error:

>>> bar = "something"
>>> foo = None
>>> print foo + bar
TypeError: cannot concatenate 'str' and 'NoneType' objects