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import random def get_random_captcha(num): '''生成随机验证码''' code = '' for i in range(num): num = str(random.randint(0, 9)) upper = chr(random.randint(65, 90)) lower = chr(random.randint(97, 122)) lst = [num, upper, lower] ret = random.choice(lst) code = ''.join([code, ret]) return code