Python使用date模块进行日期处理的终极指南

from datetime import date, timedelta
d = date(2025, 3, 26)
next_week = d + timedelta(days=7)  # 2025-04-02
last_month = d - timedelta(days=30)  # 2025-02-24

d1 = date(2025, 1, 1)
d2 = date(2025, 1, 15)
print(d1 < d2)  # True

# 创建指定日期
d = date(2025, 10, 1)
 
# 创建当前日期
today = date.today()  # 2025-03-26

d = date(2025, 10, 1)
new_date = d.replace(year=2026, month=12)  # 2026-12-01

d = date(2025, 10, 1)
print(d.strftime("%Y-%m-%d"))  # 2025-10-01
print(d.strftime("%B %d, %Y"))  # October 01, 2025

date_str = "2025-10-01"
d = date.fromisoformat(date_str)  # 2025-10-01

d1 = date(2025, 10, 10)
d2 = date(2025, 10, 1)
delta = d1 - d2
print(delta.days)  # 9

d = date.today()
print(f"年份：{d.year}, 月份：{d.month}, 日：{d.day}")
print(d.weekday())  # 0（周一）到6（周日）
print(d.isoweekday())  # 1（周一）到7（周日）

sign_date = date(2025, 3, 1)
expire_date = sign_date + timedelta(days=365*2)  # 两年期合同
print(expire_date)  # 2027-03-01

def generate_payslip_date(month):
    first_day = date(date.today().year, month, 1)
    last_day = (first_day + timedelta(days=32)).replace(day=1) - timedelta(days=1)
    return f"工资结算周期：{first_day} 至 {last_day}"
 
print(generate_payslip_date(3))  # 2025-03-01 至 2025-03-31

def process_historical_data(start_date, end_date):
    current_date = start_date
    while current_date <= end_date:
        # 处理逻辑（示例：打印日期）
        print(current_date.strftime("%Y-%m"))
        current_date += timedelta(days=1)
 
process_historical_data(date(2024,1,1), date(2024,12,31))

def is_leap(year):
    return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
 
print(is_leap(2024))  # True

def validate_date(year, month, day):
    try:
        date(year, month, day)
        return True
    except ValueError:
        return False
 
print(validate_date(2025, 2, 29))  # False（非闰年）

from datetime import datetime, timezone
 
utc_now = datetime.now(timezone.utc).date()  # 获取UTC时间日期