Python装饰器之classmethod 和 staticmethod：

    1. class A(object):
    2.       arg1 = 1
    3.       def __init__(self,user,pwd):
    4.             self.user = user
    5.             self.pwd = pwd
    7.       def show(self):
    8.             print "user -> ",self.user
    9.             print "pwd ->  ",self.pwd
    11.       @classmethod
    12.       def getConn(cls,_cstr):
    13.             sp = _cstr.split(';')
    14.             newA = cls(sp[0],sp[1])
    16.             #newA.show()
    17.             return newA
    19.       @staticmethod
    20.       def staticFun():
    21.             print "run static fun "
    23. aa = A.getConn('zhangshang;newtest')
    24. aa.show()
    26. A.staticFun()
    27. aa.staticFun()

    Python 生成器之yield
    example: 使用生成器深度遍历目录：

    1. import os
    2. def find(path):
    3.       if not os.path.isdir(path):
    4.             return
    5.       _files = os.listdir(path)
    7.       for _f in _files:
    8.             if os.path.isdir(os.path.join(path,_f)):
    9.                   for item in find(os.path.join(path,_f)):
    10.                         yield item
    11.             else:
    12.                   yield _f
    14. path = r'D:\'
    15. f = find(path)
    17. for _f in f:
    18.       print _f