None
>>> dir(None)
['__bool__', '__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']
Definition
None is the absence of value. It is used to indicate "nothing" or "no result". Every occurance of None refers to the same single object.
Dunder methods
| Dunder Method | Operation | Example (normal syntax) | Example (dunder call) |
|---|---|---|---|
__bool__ | Truth value | bool(None) → False | None.__bool__() |
__repr__ | Representation | repr(None) → 'None' | None.__repr__() |
__str__ | String form | str(None) → 'None' | None.__str__() |