Python | datetime.timedelta()函数
原文:https://www . geesforgeks . org/python-datetime-time delta-function/
Python timedelta() 函数存在于日期时间库下，一般用于计算日期差异，也可以用于 Python 中的日期操作。这是执行日期操作最简单的方法之一。
语法: datetime.timedelta(天=0，秒=0，微秒=0，毫秒=0，分钟=0，小时=0，周=0)
返回:日期
代码#1:
# Timedelta function demonstration
from datetime import datetime, timedelta
# Using current time
ini_time_for_now = datetime.now()
# printing initial_date
print ("initial_date", str(ini_time_for_now))
# Calculating future dates
# for two years
future_date_after_2yrs = ini_time_for_now + \
timedelta(days = 730)
future_date_after_2days = ini_time_for_now + \
timedelta(days = 2)
# printing calculated future_dates
print('future_date_after_2yrs:', str(future_date_after_2yrs))
print('future_date_after_2days:', str(future_date_after_2days))
Output:
initial_date 2019-02-27 12:41:45.018389
future_date_after_2yrs: 2021-02-26 12:41:45.018389
future_date_after_2days: 2019-03-01 12:41:45.018389
代码#2:
# Timedelta function demonstration
from datetime import datetime, timedelta
# Using current time
ini_time_for_now = datetime.now()
# printing initial_date
print ("initial_date", str(ini_time_for_now))
# Calculating past dates
# for two years
past_date_before_2yrs = ini_time_for_now - \
timedelta(days = 730)
# for two hours
past_date_before_2hours = ini_time_for_now - \
timedelta(hours = 2)
# printing calculated past_dates
print('past_date_before_2yrs:', str(past_date_before_2yrs))
print('past_date_after_2days:', str(past_date_before_2hours))
Output:
initial_date 2019-02-27 12:41:46.104662
past_date_before_2yrs: 2017-02-27 12:41:46.104662
past_date_after_2days: 2019-02-27 10:41:46.104662
代码#3:
# Timedelta function demonstration
from datetime import datetime, timedelta
# Using current time
ini_time_for_now = datetime.now()
# printing initial_date
print ("initial_date", str(ini_time_for_now))
# Some another datetime
new_final_time = ini_time_for_now + \
timedelta(days = 2)
# printing new final_date
print ("new_final_time", str(new_final_time))
# printing calculated past_dates
print('Time difference:', str(new_final_time - \
ini_time_for_now))
Output:
initial_date 2019-02-27 12:41:47.386595
new_final_time 2019-03-01 12:41:47.386595
Time difference: 2 days, 0:00:00
版权属于：月萌API www.moonapi.com，转载请注明出处
