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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