夏令时开始

在 Python 中处理日期和时间

Max Shron

Data Scientist and Author

夏令时开始

spring_ahead_159am = datetime(2017, 3, 12, 1, 59, 59)
spring_ahead_159am.isoformat()

'2017-03-12T01:59:59'

spring_ahead_3am = datetime(2017, 3, 12, 3, 0, 0)
spring_ahead_3am.isoformat()

'2017-03-12T03:00:00'

(spring_ahead_3am - spring_ahead_159am).total_seconds()

3601.0

夏令时开始

from datetime import timezone, timedelta

EST = timezone(timedelta(hours=-5))
EDT = timezone(timedelta(hours=-4))

夏令时开始

spring_ahead_159am = spring_ahead_159am.replace(tzinfo = EST)
spring_ahead_159am.isoformat()

'2017-03-12T01:59:59-05:00'

spring_ahead_3am = spring_ahead_3am.replace(tzinfo = EDT)
spring_ahead_3am.isoformat()

'2017-03-12T03:00:00-04:00'

(spring_ahead_3am - spring_ahead_159am).seconds

夏令时开始

使用 dateutil

# Import tz
from dateutil import tz

# Create eastern timezone
eastern = tz.gettz('America/New_York')

# 2017-03-12 01:59:59，东部标准时间（EST）
spring_ahead_159am = datetime(2017, 3, 12, 1, 59, 59,
                              tzinfo = eastern)

# 2017-03-12 03:00:00，东部夏令时（EDT）
spring_ahead_3am = datetime(2017, 3, 12, 3, 0, 0, 
                            tzinfo = eastern)

夏令时

在 Python 中处理日期和时间