我已经安装了 pytest 但是在命令提示符中测试 pytest --version 时出现以下错误:
Traceback (most recent call last):
File "C:\Python\Scripts\pytest-script.py", line 11, in <module>
load_entry_point('pytest==5.1.0', 'console_scripts', 'pytest')()
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\config\__init__.py", line 58, in main
config = _prepareconfig(args, plugins)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\config\__init__.py", line 208, in _prepareconfig
pluginmanager=pluginmanager, args=args
File "c:\python\lib\site-packages\pluggy\hooks.py", line 289, in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
File "c:\python\lib\site-packages\pluggy\manager.py", line 87, in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
File "c:\python\lib\site-packages\pluggy\manager.py", line 81, in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
File "c:\python\lib\site-packages\pluggy\callers.py", line 203, in _multicall
gen.send(outcome)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\helpconfig.py", line 89, in pytest_cmdline_parse
config = outcome.get_result()
File "c:\python\lib\site-packages\pluggy\callers.py", line 80, in get_result
raise ex[1].with_traceback(ex[2])
File "c:\python\lib\site-packages\pluggy\callers.py", line 187, in _multicall
res = hook_impl.function(*args)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\config\__init__.py", line 716, in pytest_cmdline_parse
self.parse(args)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\config\__init__.py", line 924, in parse
self._preparse(args, addopts=addopts)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\config\__init__.py", line 880, in _preparse
early_config=self, args=args, parser=self._parser
File "c:\python\lib\site-packages\pluggy\hooks.py", line 289, in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
File "c:\python\lib\site-packages\pluggy\manager.py", line 87, in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
File "c:\python\lib\site-packages\pluggy\manager.py", line 81, in <lambda>
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
File "c:\python\lib\site-packages\pluggy\callers.py", line 208, in _multicall
return outcome.get_result()
File "c:\python\lib\site-packages\pluggy\callers.py", line 80, in get_result
raise ex[1].with_traceback(ex[2])
File "c:\python\lib\site-packages\pluggy\callers.py", line 182, in _multicall
next(gen) # first yield
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\capture.py", line 42, in pytest_load_initial_conftests
_py36_windowsconsoleio_workaround(sys.stdout)
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\capture.py", line 819, in _py36_windowsconsoleio_workaround
sys.stdin = _reopen_stdio(sys.stdin, "rb")
File "c:\python\lib\site-packages\pytest-5.1.0-py3.7.egg\_pytest\capture.py", line 812, in _reopen_stdio
open(os.dup(f.fileno()), mode, buffering),
OSError: [WinError 87] The parameter is incorrect
我该如何修复它?
答案1
看起来这是由于 pytest/Python 错误造成的:
https://github.com/pytest-dev/pytest/issues/5724
https://bugs.python.org/issue37549
目前,您可以降级到 Python 3.7.3,直到有人找到解决方法。