= Python Built-ins Constants = <> ---- == Elipsis == ---- == False == ---- == None == ---- == NotImplemented == A value that should only be returned by [[Python/DunderMethod|dunder methods]]. When a binary (or in-place) method (such as `__add__()`) returns `NotImplemented`, the reflected operation (`__radd__()`) is attempted on the other side. ---- == True == ---- CategoryRicottone