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我的Python3安裝失敗。我相信這可能是由於我的$ PYTHONPATH需要清理。我如何編輯PYTHONPATH（我不知道它在哪裏）。在macOS上編輯PYTHONPATH
我能得到什麼，當我運行python3：
➜ ~ python3
Failed to import the site module
ImportError: bad magic number in 'site': b'\x03\xf3\r\n'
$ PYTHONPATH
➜ ~ python -c "import sys; print '\n'.join(sys.path)"
/Users/asselinpaul/Dropbox/Coding/Github/sathotwordspy/src/python-firebase
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Cython-0.20-py2.7-macosx-10.6-intel.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/python_yelp_v2-0.2-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pysnap-0.1-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycrypto-2.6.1-py2.7-macosx-10.6-intel.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pysnapchat-0.1-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/docopt-0.6.1-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytrth-1.0-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/egenix_mx_base-3.2.8-py2.7-macosx-10.6-intel.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/suds-0.4-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas-0.15.0rc1_19_g520170d-py2.7-macosx-10.6-intel.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/distribute-0.7.3-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/yolk-0.4.3-py2.7.egg
/Library/Python/2.7/site-packages/readline-6.2.4.1-py2.7-macosx-10.7-intel.egg
/Library/Python/2.7/site-packages/nose-1.3.0-py2.7.egg
/Library/Python/2.7/site-packages/six-1.5.2-py2.7.egg
/Library/Python/2.7/site-packages/pyparsing-1.5.7-py2.7.egg
/Library/Python/2.7/site-packages/pika-0.9.13-py2.7.egg
/Library/Python/2.7/site-packages/patsy-0.2.1-py2.7.egg
/Library/Python/2.7/site-packages/Sphinx-1.2.1-py2.7.egg
/usr/local/lib/python2.7/site-packages
/Users/asselinpaul
/usr/local/lib/python2.7/site-packages/PIL
/usr/local/Cellar/matplotlib/2.0.1/libexec/lib/python2.7/site-packages
/usr/local/Cellar/numpy/1.12.1/libexec/nose/lib/python2.7/site-packages
/usr/local/Cellar/protobuf/3.3.0/libexec/lib/python2.7/site-packages
/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PyObjC
/Library/Python/2.7/site-packages
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC
一個選項來嘗試，打開'Terminal'，和輸入'echo $ PYTHONPATH'會告訴你它是否已經在你的系統上定義了。如果有，請檢查它的定義位置（可能在〜/ .profile，〜/ .bashrc或〜/ .bash_profile等），這樣快速的'grep PYTHONPATH〜/ .bash *'或'grep PYTHONPATH〜/.profile'可能會顯示變量定義。 （[本問答]（https://unix.stackexchange.com/questions/813/how-to-determine-where-an-environment-variable-came-from）也可能有幫助）。如果該終端命令返回一個空行，請創建或編輯其中一個文件並添加您想要的「$ PYTHONPATH」定義 – davedwards