How-to articles, tricks, and solutions about NONETYPE

not None test in Python

In Python, you can check if a variable is not equal to None using the is not operator.

Python `if x is not None` or `if not x is None`?

The proper way to check if a variable x is not None in Python is to use if x is not None.

TypeError: 'NoneType' object is not iterable in Python

The TypeError: 'NoneType' object is not iterable error message is raised when you are trying to iterate over an object that has a value of None, which is not iterable.