在本机安装jupyter时遇到了一些问题，在pip3 install jupyter之后，会报warning 且 which jupyter之后找不到程序。 warning 如下
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The script pygmentize is installed in '/Users/xuser/Library/Python/3.7/bin' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. The scripts jupyter, jupyter-migrate and jupyter-troubleshoot are installed in '/Users/xuser/Library/Python/3.7/bin' which is not on PATH.
show 一下一脸蒙蔽的状态，难道我要配一下path？ wait 好像不是那么回事儿啊。
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➜ ~ which jupyter3 jupyter3 not found ➜ ~ pip3 show jupyter Name: jupyter Version: 1.0.0 Summary: Jupyter metapackage. Install all the Jupyter components in one go. Home-page: http://jupyter.org Author: Jupyter Development Team Author-email: [email protected] License: BSD Location: /Users/xuser/Library/Python/3.7/lib/python/site-packages Requires: qtconsole, ipywidgets, nbconvert, ipykernel, jupyter-console, notebook Required-by: