![](https://tutsnode.org/wp-content/uploads/2021/08/Pythons-None-Null-in-Python.png)
Description
If you have experience with other programming languages, like C or Java, then you’ve probably heard of the concept of null
. Many languages use this to represent a pointer that doesn’t point to anything, to denote when a variable is empty, or to mark default parameters that you haven’t yet supplied. null
is often defined to be 0
in those languages, but null
in Python is different.
Python uses the keyword None
to define null
objects and variables. While None
does serve some of the same purposes as null
in other languages, it’s another beast entirely. As the null
in Python, None
is not defined to be 0
or any other value. In Python, None
is an object and a first-class citizen!
In this course, you’ll learn:
- What
None
is and how to test for it - When and why to use
None
as a default parameter - What
None
andNoneType
mean in your traceback - How to use
None
in type checking - How
null
in Python works under the hood
Download Links
Direct Download
Python’s None: Null in Python.zip (50.1 MB) | Mirror