python练习题-day19

1、将字符串的时间"2017-10-10 23:40:00"转换为时间戳和时间元组

import time
s="2017-10-10 23:40:00"
stru_time=time.strptime(s,"%Y-%m-%d %H:%M:%S")
c_time=time.mktime(stru_time)
print(stru_time,c_time)

2、字符串格式更改。如提time = “2017-10-10 23:40:00”,想改为 time= “2017/10/10 23:40:00”

import time
s= "2017-10-10 23:40:00"
stru_time=time.strptime(s,"%Y-%m-%d %H:%M:%S")
s1=time.strftime("%Y/%m/%d %H:%M:%S",stru_time)
print(s1)

3、获取当前时间戳转换为指定格式日期

import time
now_time=time.time()
stru_time=time.localtime(now_time)
for_time=time.strftime("%Y-%m-%d %H:%M:%S",stru_time)
print(for_time)

4、获得三天前的时间

import time
t1=time.time()-60*60*24*3
stru_time=time.localtime(t1)
for_time=time.strftime("%m/%d/%Y %H:%M:%S",stru_time)
print(for_time)

5、求时间差

import time
t1="1993-12-27"
stru_time=time.strptime(t1,"%Y-%m-%d")
c_time=time.mktime(stru_time)
t=time.time()-c_time
st_time=time.gmtime(t)
print("相差%s年%s月%s天%s小时%s分钟%s秒"%(st_time.tm_year-1970,st_time.tm_mon-1,st_time.tm_mday-1,st_time.tm_hour,st_time.tm_min,st_time.tm_sec))

6、随机验证码

yzm=""
a=range(65,91)
b=range(48,58)
li=list(a)+list(b)
count=0
while count<6:
    s=random.choice(li)
    yzm+=chr(s)
    count+=1
print(yzm)

import random

def v_code():

    code = ''
    for i in range(5):

        num=random.randint(0,9)
        alf=chr(random.randint(65,90))
        add=random.choice([num,alf])
        code="".join([code,str(add)])

    return code

print(v_code())

随机验证码