http://stackoverflow.com/questions/2823316/generate-a-random-letter-in-python
>>> import random >>> import string >>> random.choice(string.ascii_letters) 'g'
>>> import string >>> string.letters 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' >>> import random >>> random.choice(string.letters) 'j'
我覺得自己搞定義字符串,比通過string模塊好吧
數字string.digits
string模塊有各種可用字符集的分類,可以參考