File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 143, in main
    config = _prepareconfig(args, plugins)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 318, in _prepareconfig
    config = pluginmanager.hook.pytest_cmdline_parse(
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\hooks.py", line 286, in __call__
    return self._hookexec(self, self.get_hookimpls(), kwargs)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\manager.py", line 93, in _hookexec
    return self._inner_hookexec(hook, methods, kwargs)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\manager.py", line 84, in <lambda>
    self._inner_hookexec = lambda hook, methods, kwargs: hook.multicall(
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\callers.py", line 203, in _multicall
    gen.send(outcome)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\helpconfig.py", line 100, in pytest_cmdline_parse
    config = outcome.get_result()  # type: Config
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\callers.py", line 80, in get_result
    raise ex[1].with_traceback(ex[2])
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\callers.py", line 187, in _multicall
    res = hook_impl.function(*args)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 1003, in pytest_cmdline_parse
    self.parse(args)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 1280, in parse
    self._preparse(args, addopts=addopts)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 1172, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\pluggy\manager.py", line 300, in load_setuptools_entrypoints
    self.register(plugin, name=ep.name)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 443, in register
    self.consider_module(plugin)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 669, in consider_module
    self._import_plugin_specs(getattr(mod, "pytest_plugins", []))
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 676, in _import_plugin_specs
    self.import_plugin(import_spec)
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 705, in import_plugin
    raise ImportError(
  File "C:\Programs\WPy64-3902\python-3.9.0.amd64\lib\site-packages\_pytest\config\__init__.py", line 703, in import_plugin
    __import__(importspec)
ImportError: Error importing plugin "pytest_tornasync": No module named 'pytest_tornasync'

python -m pip install pytest-tornasync