本文實(shí)例講述了Python基礎(chǔ)學(xué)習(xí)之時(shí)間轉(zhuǎn)換函數(shù)用法。分享給大家供大家參考，具體如下：

前言

python的時(shí)間格式分為多種，幾種格式之間的轉(zhuǎn)換方法時(shí)常是我們遇到的而且是經(jīng)常忘記的點(diǎn)，python不像php，時(shí)間字符串和datetime是一起的，只需要strtotime和date函數(shù)就可以相互轉(zhuǎn)化。雖然網(wǎng)上已經(jīng)有很多python時(shí)間轉(zhuǎn)換的文章，但是由于作者本人經(jīng)常做海外業(yè)務(wù)，需要各種時(shí)區(qū)之間的轉(zhuǎn)換，所以這篇文章會(huì)對按時(shí)區(qū)轉(zhuǎn)換各種時(shí)間格式做一個(gè)總結(jié)。

轉(zhuǎn)換方法圖示(圖片轉(zhuǎn)自網(wǎng)絡(luò))：

一、字符串轉(zhuǎn)時(shí)間戳

1、默認(rèn)：

            
import time
def time_str_to_timestamp(string_time, _format="%Y-%m-%d %H:%M:%S"):
  return int(time.mktime(time.strptime(string_time, _format)))


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import time
import datetime
from pytz import timezone as tz
def time_str_to_timestamp_by_timezone(string_time, _format="%Y-%m-%d %H:%M:%S”, from_tz=“UTC”, to_tz="America/Los_Angeles"):
  from_tz = tz(from_tz)
  to_tz = tz(to_tz)
  return int(time.mktime(
    datetime.datetime.strptime(string_time, _format).replace(
      tzinfo=from_tz).astimezone(to_tz).timetuple()))


          

二、時(shí)間戳轉(zhuǎn)字符串

1、默認(rèn)：

            
import time
def timestamp_to_str(timestamp, _format="%Y-%m-%d %H:%M:%S"):
  return time.strftime(_format, time.localtime(timestamp))


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import datetime
from pytz import timezone as tz
def timestamp_to_str_by_timezone(timestamp, _format="%Y-%m-%d %H:%M:%S”, to_tz="America/Los_Angeles"):
  to_tz = tz(to_tz)
  return str(datetime.datetime.fromtimestamp(timestamp, to_tz).strftime(_format))


          

三、字符串轉(zhuǎn)datetime

1、默認(rèn)：

            
import datetime
def datetime_str_to_datetime(string_time, _format="%Y-%m-%d %H:%M:%S"):
  return datetime.datetime.strptime(string_time, _format)


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import datetime
from pytz import timezone as tz
def datetime_str_to_datetime_by_timezone(string_time, from_tz=“UTC”, to_tz="America/Los_Angeles”, _format="%Y-%m-%d %H:%M:%S",):
  from_tz = tz(from_tz)
  to_tz = tz(to_tz)
  return datetime.datetime.strptime(string_time, _format).replace(
        tzinfo=from_tz).astimezone(to_tz)


          

四、datetime轉(zhuǎn)字符串

1、默認(rèn)：

            
import datetime
def datetime_to_datetime_str(date, _format="%Y-%m-%d %H:%M:%S"):
  return date.strftime(_format)


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import datetime
from pytz import timezone as tz
def datetime_to_datetime_str_by_timezone(date, from_tz=“UTC”, to_tz="America/Los_Angeles”, _format="%Y-%m-%d %H:%M:%S"):
  from_tz = tz(from_tz)
  to_tz = tz(to_tz)
  date = date.replace(tzinfo=from_tz).astimezone(to_tz)
  return date.strftime(_format)


          

五、datetime轉(zhuǎn)時(shí)間戳

1、默認(rèn)：

            
import time
def datetime_to_timestamp(date):
  return int(time.mktime(date.timetuple()))


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import time
from pytz import timezone as tz
def datetime_to_timestamp_by_timezone(date, from_tz=“UTC”, to_tz="America/Los_Angeles"):
  from_tz = tz(from_tz)
  to_tz = tz(to_tz)
  return int(time.mktime(date.replace(
      tzinfo=from_tz).astimezone(to_tz).timetuple()))


          

六、時(shí)間戳轉(zhuǎn)datetime

1、默認(rèn)：

            
import datetime
def timestamp_to_datetime(time_stamp):
  return datetime.datetime.fromtimestamp(time_stamp)


          

2、按時(shí)區(qū)轉(zhuǎn)：

            
import datetime
from pytz import timezone as tz
def timestamp_to_datetime_by_timezone(time_stamp, to_tz="America/Los_Angeles"):
  to_tz = tz(to_tz)
  return datetime.datetime.fromtimestamp(time_stamp, to_tz)


          

PS：這里再為大家推薦幾款關(guān)于日期與天數(shù)計(jì)算的在線工具供大家使用：

在線日期/天數(shù)計(jì)算器：
http://tools.jb51.net/jisuanqi/date_jisuanqi

在線萬年歷日歷：
http://tools.jb51.net/bianmin/wannianli

在線陰歷/陽歷轉(zhuǎn)換工具：
http://tools.jb51.net/bianmin/yinli2yangli

Unix時(shí)間戳(timestamp)轉(zhuǎn)換工具：
http://tools.jb51.net/code/unixtime

更多關(guān)于Python相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《Python日期與時(shí)間操作技巧總結(jié)》、《Python數(shù)學(xué)運(yùn)算技巧總結(jié)》、《Python數(shù)據(jù)結(jié)構(gòu)與算法教程》、《Python Socket編程技巧總結(jié)》、《Python函數(shù)使用技巧總結(jié)》、《Python字符串操作技巧匯總》及《Python入門與進(jìn)階經(jīng)典教程》

希望本文所述對大家Python程序設(shè)計(jì)有所幫助。