resent = msg.get_all('Resent-Date') AttributeError: 'str' object has no attribute 'get_all'

resent = msg.get_all(‘Resent-Date’)
AttributeError: ‘str’ object has no attribute ‘get_all’
代码部分：
resent = msg.get_all('Resent-Date') AttributeError: 'str' object has no attribute 'get_all'

错误提示：
resent = msg.get_all('Resent-Date') AttributeError: 'str' object has no attribute 'get_all'

原因：send_message()方法 resent = msg.get_all('Resent-Date') AttributeError: 'str' object has no attribute 'get_all'

修改:
cconn.send_message(msg,theaccount, [‘3*****@qq.com’, ‘3*****@qq.com’])

成功！！！！！！！！！！！！！！！！！！

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resent = msg.get_all('Resent-Date') AttributeError: 'str' object has no attribute 'get_all'

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