def clone(self):
        """
        Returns:
            Calendar: an exact deep copy of self
        """
        clone = copy.copy(self)
        clone._unused = clone._unused.clone()
        clone.events = copy.copy(self.events)
        clone.todos = copy.copy(self.todos)
        clone._timezones = copy.copy(self._timezones)
        return clone
def clone ( self ) : clone = copy . copy ( self ) clone . _unused = clone . _unused . clone ( ) clone . events = copy . copy ( self . events ) clone . todos = copy . copy ( self . todos ) clone . _timezones = copy . copy ( self . _timezones ) return clone
Returns:
            Calendar: an exact deep copy of self