モノッそい簡単です def randomstr(length): stri = 'abcdefghijklmnopqrsuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' return ''.join([random.choice(stri) for x in xrange(length)]) 参考と言うか、出所：Bright-Green.com: Generating a random string