# Author Li
import random
# print(random.random())
# print(random.randint(1,3))# 包含3
# print(range(3))#取不到3
# print(random.randrange(1,2))
# print(random.uniform(1,100))
checkcode = ''
# for i in range(4):
# current = random.randint(1,9)
# checkcode += str(current)
print(checkcode)
for i in range(4):
current = random.randrange(0,4)
if current == i:
tmp = chr(random.randint(65,90))
else:
tmp = random.randint(0,9)
checkcode += str(tmp)
print(checkcode)
运行结果：9L23
注：random函数随机产生，用来匹配！
