Python中实现对Timestamp和Datetime及UTC时间之间的转换_Python

Python中实现对Timestamp和Datetime及UTC时间之间的转换

2020-05-31 10:54脚本之家 Python

这篇文章主要介绍了Python中实现对Timestamp和Datetime及UTC时间之间的转换,例子则主要针对Ubuntu等类UNIX系统,需要的朋友可以参考下

Python项目中很多时候会需要将时间在Datetime格式和TimeStamp格式之间转化，又或者你需要将UTC时间转化为本地时间，本文总结了这几个时间之间转化的函数，供大家参考。

一、Datetime转化为TimeStamp

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									def datetime2timestamp(dt, convert_to_utc=False):

									  ''' Converts a datetime object to UNIX timestamp in milliseconds. '''

									  if isinstance(dt, datetime.datetime):

									    if convert_to_utc: # 是否转化为UTC时间

									      dt = dt + datetime.timedelta(hours=-8) # 中国默认时区

									    timestamp = total_seconds(dt - EPOCH)

									    return long(timestamp)

									  return dt

二、TimeStamp转化为Datetime

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									def timestamp2datetime(timestamp, convert_to_local=False):

									  ''' Converts UNIX timestamp to a datetime object. '''

									  if isinstance(timestamp, (int, long, float)):

									    dt = datetime.datetime.utcfromtimestamp(timestamp)

									    if convert_to_local: # 是否转化为本地时间

									      dt = dt + datetime.timedelta(hours=8) # 中国默认时区

									    return dt

									  return timestamp

三、当前UTC时间的TimeStamp

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									def timestamp_utc_now():

									  return datetime2timestamp(datetime.datetime.utcnow())

四、当前本地时间的TimeStamp

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									def timestamp_now():

									  return datetime2timestamp(datetime.datetime.now())

五、UTC时间转化为本地时间

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									# 需要安装python-dateutil

									# Ubuntu下：sudo apt-get install python-dateutil

									# 或者使用PIP：sudo pip install python-dateutil

									from dateutil import tz

									from dateutil.tz import tzlocal

									from datetime import datetime

									# get local time zone name

									print datetime.now(tzlocal()).tzname()

									# UTC Zone

									from_zone = tz.gettz('UTC')

									# China Zone

									to_zone = tz.gettz('CST')

									utc = datetime.utcnow()

									# Tell the datetime object that it's in UTC time zone

									utc = utc.replace(tzinfo=from_zone)

									# Convert time zone

									local = utc.astimezone(to_zone)

									print datetime.strftime(local, "%Y-%m-%d %H:%M:%S")