def ClearCallHistory(self, Username='ALL', Type=chsAllCalls):
        """Clears the call history.

        :Parameters:
          Username : str
            Skypename of the user. A special value of 'ALL' means that entries of all users should
            be removed.
          Type : `enums`.clt*
            Call type.
        """
        cmd = (str(Type), Username) % 'CLEAR CALLHISTORY %s %s'
        self._DoCommand(cmd, cmd)
dataset/ETHPy150Open Skype4Py/Skype4Py/Skype4Py/skype.py/Skype.ClearCallHistory/swapped operands of `%`