Python3.x版本及以上
在實際使用Python做開發(fā)的時候，用pip安裝管理依賴庫是非常必要的川无。
pip install mysql 或者 sudo pip install mysql （或者用pip3安裝）
其中mysql是安裝的依賴庫名或者包名呛占。
或者離線安裝
wget http://...selenium-3.141.0.tar.gz
tar zvxf selenium-3.141.0.tar.gz
cd selenium-3.141.0
python setup.py build
python setup.py install
//如果python裝了多版本，需要指定安裝懦趋。pyhon3 setup.py build
裝了那么多第三方庫到自己電腦晾虑，到底安裝到了哪兒？？
第一步：先查看自己的默認安裝路徑到底是在哪帜篇？列出全局的packages包的安裝路徑在哪糙捺？
打開cmd命令窗口，執(zhí)行命令：python -m site
輸出：
sys.path = [
'/usr/local/lib',
'/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python37.zip',
'/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7',
'/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/lib-dynload',
'/Users/username/Library/Python/3.7/lib/python/site-packages',
'/usr/local/lib/python3.7/site-packages',
'/usr/local/lib/python3.7/site-packages/selenium-3.141.0-py3.7.egg',
'/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages',
'/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/selenium-3.141.0-py3.7.egg',
]
USER_BASE: '/Users/username/Library/Python/3.7' (exists)
USER_SITE: '/Users/username/Library/Python/3.7/lib/python/site-packages' (exists)
ENABLE_USER_SITE: True
site-packages 即為庫安裝的位置
