The None Keyword
Explore the use of Python's None keyword to represent null values and understand how it differs from zero and empty strings. This lesson guides you in handling missing or undefined data correctly within your programs.
We'll cover the following...
We'll cover the following...
Introduction to NoneType
In Python, None represents the absence of a value or a null value. It is a special value whose data type is NoneType and is often used as a placeholder or a default value when a variable or a function parameter does not have a specific value assigned. We can assign None to any variable, but we cannot create other variables of type NoneType.
You might be wondering how None is different from 0 or an empty string (""). Let's look at a ...