def __init__(self, message=None):
        if isinstance(message, email.Message.Message):
            self._become_message(copy.deepcopy(message))
            if isinstance(message, Message):
                message._explain_to(self)
        elif isinstance(message, str):
            self._become_message(email.message_from_string(message))
        elif hasattr(message, "read"):
            self._become_message(email.message_from_file(message))
        elif message is None:
            email.Message.Message.__init__(self)
        else:
            raise TypeError('Invalid message type: %s' % type(message))
Return e**x - 1.
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/Message.__init__--crossover with--dataset/ETHPy150Open JetBrains/python-skeletons/math.py/expm1