time 模块

time模块

timestamp 时间戳，1970年开始以秒计算

struct_tine时间元组

format_time格式化时间 （易读）

时间转换

'''

                           struct_time
                           /          \
                          /            \
                         /              \       localtime
               strftime /  strptime      \       gttime
                       /                  \
                      /                    \
                     /               mktine \   
                    /                        \ 
                   /                          \ 
            format_time                 timestamp
                                          (time.time)
                                         

                         %Y%m%D%H%M%S字符串
                          /             \
                asctime  /               \ ctime
                        /                 \
                       /                   \
                struct_time               timestamp

'''
import time
print(time.time()) # 1562067574.5663896
print(time.mktime(time.localtime())) # 1562067651.0

print(time.localtime())

time.struct_time(tm_year=2019, tm_mon=7, tm_mday=2, tm_hour=19, tm_min=41,

tm_sec=24, tm_wday=1, tm_yday=183, tm_isdst=0)

print(time.gmtime())

time.struct_time(tm_year=2019, tm_mon=7, tm_mday=2, tm_hour=19, tm_min=41,

tm_sec=24, tm_wday=1, tm_yday=183, tm_isdst=0)

print(time.strptime('2017-2-2 16:16:16','%Y-%m-%d %H:%M:%S'))

time.struct_time(tm_year=2017, tm_mon=2, tm_mday=2, tm_hour=16, tm_min=16,

tm_sec=16, tm_wday=3, tm_yday=33, tm_isdst=-1)

print(time.strftime('%Y-%m-%d %X')) # 2019-07-02 19:46:45

print(time.strftime('%Y-%m-%d %X',time.localtime())) #2019-07-02 19:47:25

星期

print(time.strftime('%a')) # Tue
print(time.strftime('%A')) # Tuesday

月份

print(time.strftime('%b')) # Jul
print(time.strftime('%B')) # July

时间日期都有

print(time.strftime('%c')) # Tue Jul 2 19:51:55 2019

一月的第几天

print(time.strftime('%d')) # 02

小时

print(time.strftime('%H')) # 19

一年的等几天

print(time.strftime('%j')) # 183

月份

print(time.strftime('%m')) # 07

分钟

print(time.strftime('%M')) # 54

AM或者PM

print(time.strftime('%p')) # PM

秒

print(time.strftime('%S')) # 14

第几个星期

print(time.strftime('%U')) # 26

一星期的第几天

print(time.strftime('%w')) # 2

星期一为一个星期的开始

print(time.strftime('%W')) # 26

相应的日期和时间

print(time.strftime('%x')) # 07/02/19
print(time.strftime('%X')) # 19:57:24

年

print(time.strftime('%y')) # 19
print(time.strftime('%Y')) # 2019

夏令时

print(time.strftime('%z')) # +0800
print(time.strftime('%%')) # %

print(time.strftime('%x %X')) # 07/02/19 20:06:24

t1 = time.time()
print(t1+10) # 1562069264.919341

datetime相当于对time模块进行了封装

import datetime
import time
d1 = datetime.date(2011,6,3)
print(d1.weekday()) # 4
print(d1.isoweekday()) # 5
print(d1.isocalendar()) # (2011, 22, 5)
print(datetime.datetime.now()) # 2019-07-02 20:22:54.840992
print(datetime.datetime.today()) # 2019-07-02 20:23:35.791064