我在这里错过了什么？有人可以在这里启发我吗？
第 1 步。我正在尝试安装 numpy。
aerin@aerin-HP-Z230-塔式工作站：~$ 须藤点安装数字
> The directory '/home/aerin/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been
> disabled. Please check the permissions and owner of that directory. If
> executing pip with sudo, you may want sudo's -H flag.
> The directory '/home/aerin/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled.
> check the permissions and owner of that directory. If executing pip
> with sudo, you may want sudo's -H flag.
> Requirement already satisfied: numpy in /usr/local/lib/python3.5/dist-packages
> You are using pip version 9.0.3, however version 10.0.1 is available.
> You should consider upgrading via the 'pip install --upgrade pip' command.
第 2 步。 好的，它说它在/usr/local/lib/python3.5/dist-packages.因此，让我们使用 numpy。
aerin@aerin-HP-Z230-Tower-Workstation:~$ python3
Python 3.5.2 (default, Nov 23 2017, 16:37:01)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>import numpy
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named 'numpy'
第 3 步。开什么玩笑？让我们看看它在哪里导入包。
>import site; site.getsitepackages()
['/usr/local/lib/python3.5/dist-packages', '/usr/lib/python3/dist-packages', '/usr/lib/python3.5/dist-packages']
你说它在那里，但它给了我一个导入错误！如果有人提示我去哪里看，我将不胜感激。谢谢！
不确定，但我认为您应该尝试：
sudo pip3 install numpy
如果这不起作用，请尝试为 python2 和 3 重新安装 numpy
尝试升级 pip 并重新安装 numpy
sudo pip install --upgrade pip
sudo pip install --reinstall numpy