Time module and datetime module, datetime Module

Time module and datetime module, datetime Module
Time module and datetime Module 1. Call

Import time # Call time module

Ii. usage method 1. time. time

Obtain the timestamp. The number of seconds from January 1, 1970 of the year when Linux was born to the time when the program was executed.

2. time. sleep ()

Pause the program for several seconds.

Time. sleep (3) # Pause the program for 3 seconds

3. time. clock ()

Calculate the time required by the CPU to execute the program except the time used by time. sleep.

Import time

Time. sleep (3)

Print (time. clock () # Calculate the time consumed by the CPU to execute the "import time" and "print" statements.

4. time. gmtime ()

Structured output

Import time

Print (time. gmtime () # time. struct_time (tm_year = 2017, tm_mon = 10, tm_mday = 26, tm_hour = 3, tm_min = 8, tm_sec = 57, tm_wday = 3, tm_yday = 299, tm_isdst = 0)

5. time. localtime ()

Structured output

import time

print(time.localtime())              # time.struct_time(tm_year=2017, tm_mon=10, tm_mday=26, tm_hour=11, tm_min=12, tm_sec=8, tm_wday=3, tm_yday=299, tm_isdst=0)

6. time. strftime ()

Custom time format output

% Y year.

% M month.

Number of % d.

The hour in the 24-hour format of % H.

% M minutes.

% S seconds.

% Z Time zone offset from UTC.

% A abbreviation of the local time week.

% A full name of the local time week.

% B abbreviation of the local time month.

% B full name of the local time month.

% C week refers to the hour, minute, and second year in the 24-hour format of the month.

% I 12 hour.

% P is in AM or PM.

Import time

C = time. localtime ()

Print (time. strftime ('% y-% m-% d % H: % M: % s', c) #17-10-26 19:57:28

7. time. strptime

Convert custom format time to structured time

A = time. strptime ('2017-09-08 18:48:35 ',' % Y-% m-% d % H: % M: % s ')

Print (a) # time. struct_time (tm_year = 2017, tm_mon = 9, tm_mday = 8, tm_hour = 18, tm_min = 48, tm_sec = 35, tm_wday = 4, tm_yday = 251, tm_isdst =-1)

Print (a. tm_mday) #8, the day of November

Print (a. tm_wday) #4, the day of the week

Print (a. tm_year) #2017, year

8. time. ctime

Import time

Print (time. ctime () # Fri Oct 27 09:38:42 2017

9. time. mktime

Converts a structured time to a timestamp.

Import time

Print (time. mktime (time. localtime () #1509068449.0

Iii. datetime Module

Import datetime
Print (datetime. datetime. now () #09:47:23. 406146