生成6位随机验证码

#coding:utf-8
'''
生成6位随机验证码
'''
import random

i = random.randint(0,9)
s = []
l = ''
for i in range(10):
s.append(str(i))
for i in range(65,91):
s.append(chr(i))
for i in range(97,123):
s.append(chr(i))
i = len(s)
for m in range(6):
n = random.randint(0,i)
l = l + s[n]
print l