not None test in Python

In Python, you can check if a variable is not equal to None using the is not operator. Here is an example code snippet:

x = 5
if x is not None:
    print("x is not None")
else:
    print("x is None")

This will print "x is not None" because the variable x is not equal to None.

Alternatively, you can use if x: which is equivalent to if x is not None:, this will evaluate to True unless x is None, False or empty.

x = 5
if x:
    print("x is not None or False")
else:
    print("x is None or False")

This will print "x is not None or False" because the variable x is not equal to None or False