None is a special constant in Python that represents the absence of a value.
Its data type is NoneType , and None is the only instance of a NoneType object.
NoneType
Variables can be assigned None to indicate "no value" or "not set".
NoneUse type() to see the type of a None value.
NoneComparing to None
To compare a value to None , use the identity operator is or is not
isis notTrue or False
None evaluates to False in a boolean context.
Example
print(bool(None))Functions returning None
Functions that do not explicitly return a value return None by default.
None