pip install 报错
2021/11/30 23:38:22
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RROR: Exception: Traceback (most recent call last): File "C:\Python\Python39\lib\site-packages\pip\_internal\cli\base_command.py", line 173, in _main status = self.run(options, args) File "C:\Python\Python39\lib\site-packages\pip\_internal\cli\req_command.py", line 203, in wrapper return func(self, options, args) File "C:\Python\Python39\lib\site-packages\pip\_internal\commands\install.py", line 315, in run requirement_set = resolver.resolve( File "C:\Python\Python39\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 94, in resolve result = self._result = resolver.resolve( File "C:\Python\Python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 472, in resolve state = resolution.resolve(requirements, max_rounds=max_rounds) File "C:\Python\Python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 341, in resolve self._add_to_criteria(self.state.criteria, r, parent=None) File "C:\Python\Python39\lib\site-packages\pip\_vendor\resolvelib\resolvers.py", line 172, in _add_to_criteria if not criterion.candidates: File "C:\Python\Python39\lib\site-packages\pip\_vendor\resolvelib\structs.py", line 151, in __bool__ return bool(self._sequence) File "C:\Python\Python39\lib\site-package
pip install scrapy -i https://mirrors.aliyun.com/pypi/simple/
pip config --global set install.trusted-host mirrors.aliyun.com
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