from datetime import datetime

today = datetime.today()
now = datetime.now()
print("當(dāng)前日期和時(shí)間是：", today)  # 當(dāng)前日期和時(shí)間是： 2024-07-29 21:05:42.281563
print("當(dāng)前日期和時(shí)間是：", now)  # 當(dāng)前日期和時(shí)間是： 2024-07-29 21:05:42.281563

specific_date = datetime(2024, 7, 29)
specific_date1 = datetime(2024, 7, 30, 21, 55, 00)
print("指定日期是:", specific_date)  # 指定日期是: 2024-07-29 00:00:00
print("指定日期是:", specific_date1)  # 指定日期是: 2024-07-30 21:55:00

# 兩個(gè)日期相減會(huì)得到時(shí)間差對(duì)象（timedelta）
delta = specific_date1 - specific_date
print(delta, type(delta))  # 1 day, 21:55:00 <class 'datetime.timedelta'>
# 獲取兩個(gè)日期相差的天數(shù)和秒數(shù)
print(delta.days, delta.seconds)  # 1 78900

# 通過(guò)datetime對(duì)象的屬性，單獨(dú)獲取時(shí)間的年月日時(shí)分秒
year = now.year
month = now.month
day = now.day
hour = now.hour
minute = now.minute
second = now.second
print(f"年: {year}, 月: {month}, 日: {day}, 時(shí): {hour}, 分: {minute}, 秒: {second}")
# 輸出->年: 2024, 月: 7, 日: 29, 時(shí): 21, 分: 08, 秒: 40

# 格式化時(shí)間對(duì)象
formatted_datetime = now.strftime('%Y年%m月%d日 %H時(shí)%M分%S秒')
print("格式化時(shí)間:", formatted_datetime)  # 2024年07月29日 21時(shí)08分19秒

from datetime import date

today1 = date.today()
year = today1.year
month = today1.month
day = today1.day
print(today1)  # 2024-07-29
print(f"年: {year}, 月: {month}, 日: {day}")  # 年: 2024, 月: 7, 日: 29

from datetime import time

current_time = time(15, 48, 6)  # 假設(shè)當(dāng)前時(shí)間是15時(shí)48分6秒
print("當(dāng)前時(shí)間:", current_time)  # 當(dāng)前時(shí)間: 15:48:06

precise_time = time(15, 48, 6, 123456)
print("精確時(shí)間:", precise_time)
hour = current_time.hour
minute = current_time.minute
second = current_time.second
microsecond = precise_time.microsecond
print(f"時(shí): {hour}, 分: {minute}, 秒: {second}, 微秒: {microsecond}")  # 時(shí): 15, 分: 48, 秒: 6, 微秒: 123456

from datetime import timedelta

# 計(jì)算未來(lái)三天的日期
future_date = now + timedelta(days=3)
print("三天后的日期:", future_date)  # 三天后的日期: 2024-08-01 21:16:26.496122

# 計(jì)算過(guò)去一小時(shí)的時(shí)間
past_time = now - timedelta(hours=1)
print("過(guò)去1小時(shí)時(shí)間：", past_time)  # 過(guò)去1小時(shí)時(shí)間：2024-07-28 20:16:26.496122

delta = timedelta(weeks=1, days=1, hours=1, minutes=1, seconds=1, microseconds=1)
print("時(shí)間:", delta)  # 時(shí)間: 8 days, 1:01:01.000001