C:\Users\zhaofei>pip install requests ERROR: Exception: Traceback (most recent call last): File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\cli\base_command.py", line 180, in _main status = self.run(options, args) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\cli\req_command.py", line 204, in wrapper return func(self, options, args) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\commands\install.py", line 318, in run requirement_set = resolver.resolve( File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 127, in resolve result = self._result = resolver.resolve( File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 473, in resolve state = resolution.resolve(requirements, max_rounds=max_rounds) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 341, in resolve name, crit = self._merge_into_criterion(r, parent=None) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 172, in _merge_into_criterion if not criterion.candidates: File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 139, in __bool__ return bool(self._sequence) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 143, in __bool__ return any(self) File "c:\users\zhaofei\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py", line 129, in return (c for c in iterator if id(c) not in self._incompatible_ids) File "c:\users\zhaofei\appdata\local\program
命令上加入国内源网址，指令如下：
easy_install -i https://pypi.doubanio.com/simple/ --upgrade pip
可以参考一下这个：https://blog.csdn.net/weixin_42516005/article/details/112530589
您好，我是有问必答小助手，您的问题已经有小伙伴解答了，您看下是否解决，可以追评进行沟通哦~
如果有您比较满意的答案 / 帮您提供解决思路的答案，可以点击【采纳】按钮，给回答的小伙伴一些鼓励哦～～
ps:问答VIP仅需29元，即可享受5次/月 有问必答服务，了解详情>>>https://vip.csdn.net/askvip?utm_source=1146287632