Check if Variable is None in Python

To check if a variable is equal to None, you can use the equality operator == and check if the variable is equal to None.

a = None
b = "Not None"

print(a == None)
print(b == None)

#Output:
True
False

You can also use the is keyword to check if a variable is None.

a = None
b = "Not None"

print(a is None)
print(b is None)

#Output:
True
False

When working with variables in Python, the ability to check if a variable is a specific type easily is valuable.

One such case is if you want to check if a variable is None.

The None keyword is used to define a null value. None is of type NoneType and only None can be None.

None is different than 0, False, and an empty string.

You can use None to set a variable to null and another case where you might get None is if you have a function which doesn’t return a value.

To check if a variable is equal to None, you can use the equality operator == and check if the variable is equal to None.

Below shows you an example of how you can check if a variable is None in Python.

a = None
b = "Not None"

print(a == None)
print(b == None)

#Output:
True
False

You can also use the is keyword to check if a variable is None.

a = None
b = "Not None"

print(a is None)
print(b is None)

#Output:
True
False

Hopefully this article has been useful for you to learn how to check if a variable is none or not.