# 计算时间差
import time
start_time = time.mktime(time.strptime('2017-09-11 08:30:00','%Y-%m-%d %H:%M:%S'))
end_time = time.mktime(time.strptime('2018-07-30 08:30:00','%Y-%m-%d %H:%M:%S'))
dif_time = end_time - start_time
dif_time = time.gmtime(dif_time)
print('过去了%d年%d月%d天%d小时%d分钟%d秒'%(dif_time.tm_year-1970,dif_time.tm_mon-1,dif_time.tm_mday-1,dif_time.tm_hour,dif_time.tm_min,dif_time.tm_sec))
# 验证码
import random
def v_code():
'''
验证码
:return:
'''
code = ''
for count in range(4):
digit_code = random.randint(0,9)
word_code = chr(random.randint(65,90))
add_code = random.choice([digit_code,word_code])
code = ''.join([code,str(add_code)])
return code