parameters: (self, handler: Callable[[_Sender], None])
return_statement: return self
docstring: `event -= handler` notation for removing a handler.
docstring_summary: `event -= handler` notation for removing a handler.
docstring_tokens: event - = handler notation for removing a handler .
function: def __isub__(self, handler: Callable[[_Sender], None]) -> "Event[_Sender]":
          """
          `event -= handler` notation for removing a handler.
          """
          self.remove_handler(handler)
          return self
function_tokens: def __isub__ ( self , handler : Callable [ [ _Sender ] , None ] ) -> "Event[_Sender]" : self . remove_handler ( handler ) return self