Util.py 文件源码

def to_String(s, 
              isinstance=isinstance, str=str,
              UserString=UserString, BaseStringTypes=BaseStringTypes):
    if isinstance(s,BaseStringTypes):
        # Early out when already a string!
        return s
    elif isinstance(s, UserString):
        # s.data can only be either a unicode or a regular
        # string. Please see the UserString initializer.
        return s.data
    else:
        return str(s)