mac PyCharm 添加 Python 解释器及添加 package 路径

一、背景
PyCharm 执行 Python 时，找不到自己安装的 package，例如 pandas、numpy、scipy、scikit 等，在执行时报如下错误 ImportError: No module named pandas：

Traceback (most recent call last):
File "", line 1, in
File "/Applications/PyCharm.app/Contents/helpers/pydev/_pydev_bundle/pydev_import_hook.py", line 20, in do_import
module = self._system_import(name, *args, **kwargs)
ImportError: No module named pandas
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二、问题解决
（1）pycharm 添加 Python interpreter；
（2）给添加的 Python interpreter 添加自已安装的 package 路径。

1、pycharm 添加 Python interpreter
打开项目设置（pycharm–>preference）

添加 interpreter，选中本地 python 命令所在目录，注意保持 1 和 2 中的 interpreter 一致

2、给添加的 Python interpreter 添加自已安装的 package 路径
选中刚才添加的 interpreter，然后单击底部的”show paths for the selected interpreter”按钮，添加自己安装的 package，例如 pandas、numpy、scipy、scikit 等。

单击底部的”+”号，添加自己安装的 package 的路径

获取 package 路径

~ python
Python 2.7.10 (default, Jul 15 2017, 17:16:57)
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

import pandas
print pandas
<module 'pandas' from '/Library/Python/2.7/site-packages/pandas/init.pyc'>
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三、补充
查看当前 python interpreter 执行时加载的 package 路径

输入命令 sys.path

Out[3]:
['/Applications/PyCharm.app/Contents/helpers/pydev',
'/Library/Python/2.7/site-packages/scikit_learn-0.19.1-py2.7-macosx-10.13-intel.egg/sklearn/model_selection',
'/Library/Python/2.7/site-packages/scikit_learn-0.19.1-py2.7-macosx-10.13-intel.egg',
'/Library/Python/2.7/site-packages/scikit_learn-0.19.1-py2.7-macosx-10.13-intel.egg/sklearn',
'/Library/Python/2.7/site-packages',
'/Applications/PyCharm.app/Contents/helpers/pydev',
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python',
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC',
'/Library/Python/2.7/site-packages/pip-9.0.3-py2.7.egg',
'/Library/Python/2.7/site-packages/jupyter-1.0.0-py2.7.egg',
'/Library/Python/2.7/site-packages/qtconsole-4.3.1-py2.7.egg',
'/Library/Python/2.7/site-packages/notebook-5.4.1-py2.7.egg',
'/Library/Python/2.7/site-packages/nbconvert-5.3.1-py2.7.egg',
'/Library/Python/2.7/site-packages/jupyter_console-5.2.0-py2.7.egg',
'/Library/Python/2.7/site-packages/ipywidgets-7.1.2-py2.7.egg',
'/Library/Python/2.7/site-packages/terminado-0.8.1-py2.7.egg',
'/Library/Python/2.7/site-packages/nbformat-4.4.0-py2.7.egg',
'/Library/Python/2.7/site-packages/Jinja2-2.10-py2.7.egg',
'/Library/Python/2.7/site-packages/Send2Trash-1.5.0-py2.7.egg',
'/Library/Python/2.7/site-packages/testpath-0.3.1-py2.7.egg',
'/Library/Python/2.7/site-packages/pandocfilters-1.4.2-py2.7.egg',
'/Library/Python/2.7/site-packages/mistune-0.8.3-py2.7.egg',
'/Library/Python/2.7/site-packages/entrypoints-0.2.3-py2.7.egg',
'/Library/Python/2.7/site-packages/bleach-2.1.3-py2.7.egg',
'/Library/Python/2.7/site-packages/widgetsnbextension-3.1.4-py2.7.egg',
'/Library/Python/2.7/site-packages/jsonschema-2.6.0-py2.7.egg',
'/Library/Python/2.7/site-packages/MarkupSafe-1.0-py2.7-macosx-10.13-intel.egg',
'/Library/Python/2.7/site-packages/configparser-3.5.0-py2.7.egg',
'/Library/Python/2.7/site-packages/html5lib-1.0.1-py2.7.egg',
'/Library/Python/2.7/site-packages/functools32-3.2.3.post2-py2.7.egg',
'/Library/Python/2.7/site-packages/webencodings-0.5.1-py2.7.egg',
'/Library/Python/2.7/site-packages/pyltp-0.1.10-py2.7-macosx-10.13-intel.egg',
'/Library/Python/2.7/site-packages/Send2Trash-1.5.0-py2.7.egg',
'/Library/Python/2.7/site-packages/pandocfilters-1.4.2-py2.7.egg',
'/Library/Python/2.7/site-packages/functools32-3.2.3.post2-py2.7.egg',
'/Users/zjw94377/venv/bus/lib/python27.zip',
'/Users/zjw94377/venv/bus/lib/python2.7',
'/Users/zjw94377/venv/bus/lib/python2.7/plat-darwin',
'/Users/zjw94377/venv/bus/lib/python2.7/plat-mac',
'/Users/zjw94377/venv/bus/lib/python2.7/plat-mac/lib-scriptpackages',
'/Users/zjw94377/venv/bus/lib/python2.7/lib-tk',
'/Users/zjw94377/venv/bus/lib/python2.7/lib-old',
'/Users/zjw94377/venv/bus/lib/python2.7/lib-dynload',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
'/Users/zjw94377/venv/bus/lib/python2.7/site-packages',
'/Applications/PyCharm.app/Contents/helpers/pycharm_matplotlib_backend',
'/Library/Python/2.7/site-packages/IPython/extensions']

作者：tterminator
来源：CSDN
原文：https://blog.csdn.net/tterminator/article/details/79802094
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