Python項目中很多時候會需要將時間在Datetime格式和TimeStamp格式之間轉化，又或者你需要將UTC時間轉化為本地時間，本文總結了這幾個時間之間轉化的函數，供大家參考。
一、Datetime轉化為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: # 是否轉化為UTC時間 dt = dt + datetime.timedelta(hours=-8) # 中國默認時區 timestamp = total_seconds(dt - EPOCH) return long(timestamp) return dt |
二、TimeStamp轉化為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: # 是否轉化為本地時間 dt = dt + datetime.timedelta(hours=8) # 中國默認時區 return dt return timestamp |
三、當前UTC時間的TimeStamp
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def timestamp_utc_now(): return datetime2timestamp(datetime.datetime.utcnow()) |
四、當前本地時間的TimeStamp
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def timestamp_now(): return datetime2timestamp(datetime.datetime.now()) |
五、UTC時間轉化為本地時間
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# 需要安裝python-dateutil# Ubuntu下：sudo apt-get install python-dateutil# 或者使用PIP：sudo pip install python-dateutilfrom dateutil import tzfrom dateutil.tz import tzlocalfrom datetime import datetime # get local time zone nameprint datetime.now(tzlocal()).tzname() # UTC Zonefrom_zone = tz.gettz('UTC')# China Zoneto_zone = tz.gettz('CST') utc = datetime.utcnow() # Tell the datetime object that it's in UTC time zoneutc = utc.replace(tzinfo=from_zone) # Convert time zonelocal = utc.astimezone(to_zone)print datetime.strftime(local, "%Y-%m-%d %H:%M:%S") |
