_version200.py 文件源码

def str642int(string):
    """Converts a base64 encoded string into an integer.
    The chars of this string in in the range '0'-'9','A'-'Z','a'-'z','-','_'

    >>> str642int('7MyqL')
    123456789
    """

    if not (type(string) is types.ListType or type(string) is types.StringType):
        raise TypeError("You must pass a string or a list")

    integer = 0
    for byte in string:
        integer *= 64
        if type(byte) is types.StringType: byte = ord(byte)
        integer += from64(byte)

    return integer