一、time模块

import time

# s = time.time()
# print(s)
# time.sleep(2)

# 拿到format string的方式
# print(time.ctime(s))   # time.ctime（float） ----> format string in local time
# print(time.asctime(time.localtime(s)))    # time.asctime（tuple） ----> format string in local time
# print(time.asctime())    # 如果不传值，默认的就会用当前的时间戳
# print(time.ctime())    # 如果不传值，默认的就会用当前的struct time
# print(time.localtime())

# print(time.strftime(‘%Y-%m-%d %H:%M:%S‘, time.localtime()))    # 按照给定的格式 将 tuple---> string。 strptime  是 string parse time 的缩写，就是将字符串解析成元组的意思。
　

Commonly used format codes:

%Y  Year with century as a decimal number.
%m  Month as a decimal number [01,12].
%d  Day of the month as a decimal number [01,31].
%H  Hour (24-hour clock) as a decimal number [00,23].
%M  Minute as a decimal number [00,59].
%S  Second as a decimal number [00,61].
%z  Time zone offset from UTC.
%a  Locale‘s abbreviated weekday name.
%A  Locale‘s full weekday name.
%b  Locale‘s abbreviated month name.
%B  Locale‘s full month name.
%c  Locale‘s appropriate date and time representation.
%I  Hour (12-hour clock) as a decimal number [01,12].
%p  Locale‘s equivalent of either AM or PM.

# 拿到时间戳 float 类型
# tu = time.localtime()
# print(tu)
# s = time.mktime(tu)    # time.mktime() 将 tuple----> float
# print(time.time())

# 拿到struct time 类型
# s = time.time()
# print(time.localtime(s))   # 北京时间 接受float ---> tuple
# print(time.gmtime(s))   # 天文台时间 接受float ---> tuple

The other representation is a tuple of 9 integers giving local time.
The tuple items are:
  year (including century, e.g. 1998)
  month (1-12)
  day (1-31)
  hours (0-23)
  minutes (0-59)
  seconds (0-59)
  weekday (0-6, Monday is 0)
  Julian day (day in the year, 1-366)
  DST (Daylight Savings Time) flag (-1, 0 or 1)
If the DST flag is 0, the time is given in the regular time zone;
if it is 1, the time is given in the DST time zone;
if it is -1, mktime() should guess based on the date and time.

# print(time.strptime(time.ctime()))   # 接受 string ---> tuple。 strftime 是 string format time 的缩写  就是转成字符串时间的意思
# print(time.strptime(time.asctime()))   # 接受 string ---> tuple

常用模块

原文：https://www.cnblogs.com/Teyisang/p/13414187.html