ModuleNotFoundError:没有名为“假设”的模块

Question

我尝试使用pytest运行测试，但出现以下错误。感谢您的帮助。你知道吗

命令：pytest --nbval --cov=xxxx --cov-report html --cov-report term

Python 3.7.4版 使用的熊猫版本：0.25.0 Pytest版本：5.2.0

=========================================================================================================== test session starts ===========================================================================================================
platform linux -- Python 3.7.4, pytest-5.2.0, py-1.8.1, pluggy-0.13.1
rootdir: /
plugins: cov-2.8.1, nbval-0.9.4
collecting ... Fontconfig warning: ignoring C.UTF-8: not a valid language tag
collected 0 items / 1 errors
Coverage.py warning: No data was collected. (no-data-collected)

================================================================================================================= ERRORS ==================================================================================================================
______________________________________________________________________________________________________ ERROR collecting test session ______________________________________________________________________________________________________
root/.local/lib/python3.7/site-packages/_pytest/config/__init__.py:456: in _importconftest
    return self._conftestpath2mod[key]
E   KeyError: PosixPath('/usr/local/lib64/python3.7/site-packages/pandas/conftest.py')

During handling of the above exception, another exception occurred:
root/.local/lib/python3.7/site-packages/_pytest/config/__init__.py:462: in _importconftest
    mod = conftestpath.pyimport()
root/.local/lib/python3.7/site-packages/py/_path/local.py:701: in pyimport
    __import__(modname)
root/.local/lib/python3.7/site-packages/_pytest/assertion/rewrite.py:142: in exec_module
    exec(co, module.__dict__)
usr/local/lib64/python3.7/site-packages/pandas/conftest.py:7: in <module>
    import hypothesis
E   ModuleNotFoundError: No module named 'hypothesis'