python知識點

1、在mac下，安裝支援PIL庫。

        1.1 下載安裝Combo Installer libpng & libjpeg: http://ethan.tira-thompson.com/Mac_OS_X_Ports.html

        1.2 sudo easy_install pil

        測試代碼：

!/usr/bin/env python  import Imageimport osimport os.pathimport syspath = sys.argv[1]small_path = (path[:-1] if path[-1]=='/' else path) +'_small'if not os.path.exists(small_path):    os.mkdir(small_path)for root, dirs, files in os.walk(path):    for f in files:        fp = os.path.join(root, f)        img = Image.open(fp)        w, h = img.size        img.resize((w/4, h/4)).save(os.path.join(small_path, f), "JPEG")        print fp

2. Mac下安裝MySQL驅動

參考：http://www.cnblogs.com/ken-zhang/archive/2011/05/14/2046211.html

a. sudo easy_install mysql-python

b. export DYLD_LIBRARY_PATH=/usr/local/mysql/lib/

3. Mac安裝PyQt

    使用brew進行安裝

    brew install pyqt

    若importPyQt4失敗，在.bash_profile添加export PYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH