pip install jupyter [Errno 2] No such file or directory

表现

在安装jupyter时，报错文件没找到：

➜  ~ pip3 install jupyter
...
Successfully built pandocfilters
Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: '/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/.equests-2.21.0.dist-info/METADATA'

解决办法

1. 到该路径下查看文件：

➜  ~ cd /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/.equests-2.21.0.dist-info
➜  .equests-2.21.0.dist-info ls
requests-2.21.0.dist-info
➜  .equests-2.21.0.dist-info cd requests-2.21.0.dist-info
➜  requests-2.21.0.dist-info ls
INSTALLER     LICENSE       METADATA      RECORD        WHEEL         top_level.txt

可以发现目录层级跟预期不同。

2. 把需要的METADATA以及其他可能需要的文件一起复制到上层目录：

➜  requests-2.21.0.dist-info cp * ..

3. 再次安装，成功：

Successfully installed Send2Trash-1.5.0 appnope-0.1.0 backcall-0.1.0 bleach-3.1.0 decorator-4.4.0 defusedxml-0.6.0 entrypoints-0.3 ipykernel-5.1.1 ipython-7.6.1 ipython-genutils-0.2.0 ipywidgets-7.5.0 jedi-0.14.1 jinja2-2.10.1 jsonschema-3.0.1 jupyter-1.0.0 jupyter-client-5.3.1 jupyter-console-6.0.0 jupyter-core-4.5.0 mistune-0.8.4 nbconvert-5.5.0 nbformat-4.4.0 notebook-6.0.0 pandocfilters-1.4.2 parso-0.5.1 pexpect-4.7.0 pickleshare-0.7.5 prometheus-client-0.7.1 prompt-toolkit-2.0.9 ptyprocess-0.6.0 pygments-2.4.2 pyrsistent-0.15.3 python-dateutil-2.8.0 pyzmq-18.0.2 qtconsole-4.5.1 terminado-0.8.2 testpath-0.4.2 tornado-6.0.3 traitlets-4.3.2 wcwidth-0.1.7 webencodings-0.5.1 widgetsnbextension-3.5.0

后续

1. 该目录为啥层级不对；
2. 这样复制是否有其他影响。
   以上两点之后再补充吧，有问题再解决就是了。