史沐凡的python笔记之时间转换datetime模块的练习

#!/usr/bin/python
# -*- coding: utf-8 -*-
# @Version  : 1.0
# @Author   : QQ736592720
# @Datetime : 2022/9/18 21:09
# @Project  : smf
# @File     : sgq.py
from datetime import datetime
import time
t=time.time()#时间戳
dt=datetime.fromtimestamp(t)#datetime
s=dt.strftime("%Y-%m-%d")
print(s)#string
s="2000/11/11 00:00:00"#string
dt=datetime.strptime(s,"%Y/%m/%d %H:%M:%S")
print(dt)#datetime     2000-11-11 00:00:00
t=dt.timestamp()#时间戳
print(t)
print(str(t))
print(len(str(t)))
print(2022-80)
s="1788/12/21 00:00:00"#string
dt1=datetime.strptime(s,"%Y/%m/%d %H:%M:%S")#datetime

dt2=datetime.now()
cha=dt2-dt1#timedelta
print(cha.days,"天")#30000TIAN
c=30000
c=c*8/24
c=c/4
c=c*5/7
c=c*275/365
c=c*4/8
c=c*89/90
print(c/365,"年")
print(c,"天")
print(c*24,"小时")
print(3000/24,"天")





exit(0)
nt1=datetime.now()##datetime
print(nt1)

time.sleep(3)
nt2=datetime.now()##datetime
print(nt2)
print(nt2-nt1)#timedelta
c=nt2-nt1
print(type(c))
print(c.microseconds)








exit(0)
# 检测药品有没有过期  2023-1-1
def isguoqi(t_stamp):
    guoqishijain = "2024-1-1 00:00:00"
    dt = datetime.datetime.strptime(guoqishijain, "%Y-%m-%d %H:%M:%S")  # datetime
    tp = dt.timestamp()
    print(tp)
    if t_stamp - tp >= 0:
        print("guoqile")
        exit(0)
    else:
        print("meiguoqi")


isguoqi(time.time())
print("daguai")

exit(0)
t0 = time.time()
i = 0
while 1 == 1:
    t1 = time.time()
    if t1 - t0 == 0.5 * 60 * 60 * 1000:
        i += 1
        print(f"guo le {i} ge xiaoshi")
        t0 = time.time()  # 更新  初始值

exit(0)
while True:
    time.sleep(1)
    t = time.time()
    dt = datetime.datetime.fromtimestamp(t)
    # print(dt)#2022-09-18 21:16:45.037856
    # print(type(dt))#datetime.datetime
    # print(dt.year)
    # print(dt.month)
    # print(dt.day)
    # print(dt.hour)
    # print(dt.minute)
    # print(dt.second)
    if dt.minute + dt.second == 0:
        print(dt.hour)