(self, func)
return self
To add more functions using the += operator

         .. versionadded:: 0.6
            The __iadd__ method.
To add more functions using the += operator
To add more functions using the + = operator
def __iadd__(self, func):
      """ To add more functions using the += operator

         .. versionadded:: 0.6
            The __iadd__ method.
      """
      self.__typeCheck(func)
      self.funcList.append(func)
      return self
def __iadd__ ( self , func ) : self . __typeCheck ( func ) self . funcList . append ( func ) return self