Python中数据类型时间的介绍（附代码）

from datetime import date

data_today = date(year=2018, month=11, day=29)

print(data_today)  #输出：2018-11-29

from datetime import time

now_time = time(hour=8, minute=30, second=10)

print(now_time, type(now_time))  #输出：20:30:10 <class 'datetime.time'>

from datetime import datetime, timedelta

# 时间间隔可以通过相减得到

now = datetime.now()

before_datatime = datetime(year=2018, month=11, day=20, hour=8, minute=20, second=20)

delta = now - before_datatime

print(delta, type(delta))   #输出：70 days, 6:22:37.340041 <class 'datetime.timedelta'>

# 可以初始化时间间隔

delta_days = timedelta(days=7)

print(delta_days, type(delta_days))  #输出：7 days, 0:00:00 <class 'datetime.timedelta'>

# 可以通过时间间隔得到将来的时间

future_datetime = now + delta_days

print(future_datetime)    #输出：2019-02-05 14:43:54.582315

from datetime import datetime

import pytz

utc_tz = pytz.timezone('UTC')

print(pytz.country_timezones('cn'))  # 显示中国时区的城市   #输出：['Asia/Shanghai', 'Asia/Urumqi']

print(pytz.country_timezones('us'))  # 显示美国时区的城市

# #输出：['America/New_York', 'America/Detroit', 'America/Kentucky/Louisville', 'America/Kentucky/Monticello', 'America/Indiana/Indianapolis', 'America/Indiana/Vincennes', 'America/Indiana/Winamac', 'America/Indiana/Marengo', 'America/Indiana/Petersburg', 'America/Indiana/Vevay', 'America/Chicago', 'America/Indiana/Tell_City', 'America/Indiana/Knox', 'America/Menominee', 'America/North_Dakota/Center', 'America/North_Dakota/New_Salem', 'America/North_Dakota/Beulah', 'America/Denver', 'America/Boise', 'America/Phoenix', 'America/Los_Angeles', 'America/Anchorage', 'America/Juneau', 'America/Sitka', 'America/Metlakatla', 'America/Yakutat', 'America/Nome', 'America/Adak', 'Pacific/Honolulu']

# # 获取时区

china_tz = pytz.timezone('Asia/Shanghai')

america_tz = pytz.timezone('America/New_York')

# # 获取城市本地时间

china_local_time = datetime.now(china_tz) # 东八区

america_local_time = datetime.now(america_tz) # 西五区

print(china_local_time)   #输出：2019-01-29 14:51:51.252579+08:00

print(america_local_time)  #输出：2019-01-29 14:51:51.252579+08:00