1 def rand_code(n=6, alph=True):
 2     code = ''
 3     for i in range(n):
 4         num = str(random.randint(0, 9))  # 随机产生一个随机整数
 5         if alph:
 6             alph_upper = chr(random.randint(65, 90))   # 随机产生大写字母
 7             alph_lower = chr(random.randint(97, 122))  # 随机产生小写字母
 8             num = random.choice([num, alph_upper, alph_lower])
 9             code += num
10     return code
11 
12 
13 print(rand_code(n=6))