https://blog.csdn.net/caoxinjian423/article/details/82873830

import random
 
randomStr= ""
 
for i in range(6):
    temp = random.randrange(0,3)
    if temp == 0:
        ch = chr(random.randrange(ord('A'),ord('Z') + 1))
        randomStr += ch
    elif temp == 1:
        ch = chr(random.randrange(ord('a'),ord('z') + 1))
        randomStr += ch
    else:
        ch = str((random.randrange(0,10)))
        randomStr += ch
 
print(randomStr)
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作者：書院二層樓  
來源：CSDN  
原文：https://blog.csdn.net/caoxinjian423/article/details/82873830  
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