What is NoneType in Python

The NoneType Object is the type for the None object in Python. This is an object that indicates no value. NoneType is simply the type of the None singleton:

Objects should be checked against nullity before use.

if obj is None:

or

if obj is not None:

NoneType in Python

Simple example code.

obj = None
print(obj)
print(type(obj))

Output:

Remove None Elements from the List:

list_in = [1, 3, 'cse', None]
 
lambda_obj = lambda x: (x is not None)
 
list_out = list(filter(lambda_obj, list_in))
 
print(list_out)

Output: [1, 3, ‘cse’]

Do comment if you have any doubts or suggestions on this Python object topic.

Note: IDE: PyCharm 2021.3.3 (Community Edition)

Windows 10

Python 3.10.1

All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.