python - 无法导入 'keystoneauth1' ...尽管已安装？

Question

我在MacOs上通过brew使用python3。

当我这样做的时候

> python3 -c "import keystoneauth1"

我得到:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'keystoneauth1'

但是然后:

> pip3 install keystoneauth1
Requirement already satisfied: keystoneauth1 in /usr/local/lib/python3.7/site-packages (3.9.0)
Requirement already satisfied: iso8601>=0.1.11 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (0.1.12)
Requirement already satisfied: os-service-types>=1.2.0 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (1.2.0)
Requirement already satisfied: stevedore>=1.20.0 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (1.28.0)
Requirement already satisfied: pbr!=2.1.0,>=2.0.0 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (4.1.0)
Requirement already satisfied: six>=1.10.0 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (1.11.0)
Requirement already satisfied: requests>=2.14.2 in /usr/local/lib/python3.7/site-packages (from keystoneauth1) (2.19.1)
Requirement already satisfied: idna<2.8,>=2.5 in /usr/local/lib/python3.7/site-packages (from requests>=2.14.2->keystoneauth1) (2.7)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python3.7/site-packages (from requests>=2.14.2->keystoneauth1) (2018.4.16)
Requirement already satisfied: urllib3<1.24,>=1.21.1 in /usr/local/lib/python3.7/site-packages (from requests>=2.14.2->keystoneauth1) (1.23)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /usr/local/lib/python3.7/site-packages (from requests>=2.14.2->keystoneauth1) (3.0.4)

那里没有显示任何其他内容。当我验证安装时，情况看起来不错:

> pip3 show keystoneauth1
Name: keystoneauth1
Version: 3.9.0
Summary: Authentication Library for OpenStack Identity
Home-page: https://docs.openstack.org/keystoneauth/latest/
Author: OpenStack
Author-email: openstack-dev@lists.openstack.org
License: UNKNOWN
Location: /usr/local/lib/python3.7/site-packages
Requires: stevedore, requests, pbr, os-service-types, six, iso8601
Required-by: openstacksdk, keystoneauth

但如图所示，已经导入该模块不起作用。

对我来说，将brew python升级到最新版本3.7.6后问题就显现出来了。

我也明确升级了brew和pip3，但没有运气。

对于重复的拼写错误，我们深表歉意。模块名称确实是 keystoneauth1 .

Answer 1

我真的不明白这里到底发生了什么。

所以这并不是真正解释和解决问题的答案，而是对我来说有效的解决方法:

• 首先，我强制删除了 python brew uninstall --ignore-dependencies python
• 然后，我仅再次安装了它brew install python

之后，我的脚本(最终使用了该导入)再次工作，没有任何问题？!