pytest无法导入模块，即使这些模块在普通模式下导入正常python口译员。特别是从以下位置导入的模块conftest未能解决。当 pytest 尝试重写模块中的断言信息时，会引发 ImportErrori。
回溯示例：
================================================================================================================================================ test session starts ================================================================================================================================================
platform darwin -- Python 3.6.2, pytest-3.8.1, py-1.5.4, pluggy-0.7.1 -- /yyy/venv/bin/python3.6
cachedir: .pytest_cache
rootdir: /yyy/corporategovernance, inifile: setup.cfg
plugins: timeout-1.3.1, cov-2.5.1, populus-1.9.0, flaky-3.4.0, celery-4.1.0, splinter-1.8.5+headless
collecting 0 items / 1 errors
====================================================================================================================================================== ERRORS =======================================================================================================================================================
_________________________________________________________________________________________________________________________________ ERROR collecting corporategovernance/__init__.py __________________________________________________________________________________________________________________________________
../venv/lib/python3.6/site-packages/_pytest/config/__init__.py:381: in _getconftestmodules
return self._path2confmods[path]
E KeyError: local('/xxx/tests')
During handling of the above exception, another exception occurred:
../venv/lib/python3.6/site-packages/_pytest/config/__init__.py:412: in _importconftest
return self._conftestpath2mod[conftestpath]
E KeyError: local('/xxx/tests/conftest.py')
During handling of the above exception, another exception occurred:
../venv/lib/python3.6/site-packages/_pytest/config/__init__.py:418: in _importconftest
mod = conftestpath.pyimport()
../venv/lib/python3.6/site-packages/py/_path/local.py:668: in pyimport
__import__(modname)
../venv/lib/python3.6/site-packages/_pytest/assertion/rewrite.py:290: in load_module
six.exec_(co, mod.__dict__)
corporategovernance/tests/conftest.py:4: in <module>
import corporategovernance.backend
E ModuleNotFoundError: No module named 'corporategovernance.backend'
During handling of the above exception, another exception occurred:
../venv/lib/python3.6/site-packages/_pytest/runner.py:201: in __init__
self.result = func()
../venv/lib/python3.6/site-packages/_pytest/runner.py:261: in <lambda>
call = CallInfo(lambda: list(collector.collect()), "collect")
../venv/lib/python3.6/site-packages/_pytest/python.py:624: in collect
for x in self._collectfile(path):
../venv/lib/python3.6/site-packages/_pytest/python.py:579: in _collectfile
ihook = self.gethookproxy(path)
../venv/lib/python3.6/site-packages/_pytest/python.py:568: in gethookproxy
my_conftestmodules = pm._getconftestmodules(fspath)
../venv/lib/python3.6/site-packages/_pytest/config/__init__.py:395: in _getconftestmodules
mod = self._importconftest(conftestpath)
../venv/lib/python3.6/site-packages/_pytest/config/__init__.py:431: in _importconftest
raise ConftestImportFailure(conftestpath, sys.exc_info())
E _pytest.config.ConftestImportFailure: ModuleNotFoundError("No module named 'corporategovernance.backend'",)
E File "/yyy/venv/lib/python3.6/site-packages/_pytest/assertion/rewrite.py", line 290, in load_module
E six.exec_(co, mod.__dict__)
E File "/xxx/tests/conftest.py", line 4, in <module>
E import corporategovernance.backend
===Flaky Test Report===
如何解决？
