python3版本import requests, re, sysreload(sys)sys.setdefaultencoding("utf-8")出现错误：sys.setdefaultencoding("utf-8")AttributeError: module 'sys' has no attribute 'setdefaultencoding'原因：Python3字符串默认编码unicode, 所以sys.setdefaultencoding也不存解决方法：去掉，sys.setdefaultencoding