怎么封装Python时间处理库创建自己的TimeUtil类

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Author: Hui
# @Desc: { 时间工具类模块 }
# @Date: 2022/11/26 16:08
import time
from datetime import datetime
from typing import UNIOn
from dateutil.relativedelta import relativedelta
from enums import TimeFORMatEnum, TimeUnitEnum
class TimeUtil(object):
    """时间工具类"""
    UNITS_IN_SECONDS = {
        TimeUnitEnum.DAYS: 86400,
        TimeUnitEnum.HOURS: 3600,
        TimeUnitEnum.MINUTES: 60,
        TimeUnitEnum.SECONDS: 1,
    }
    def __init__(self, datetime_obj: datetime = None, format_str: str = TimeFormatEnum.DateTime.value):
        """
        时间工具类初始化
        Args:
            datetime_obj: 待处理的datetime对象，不传时默认取当前时间
            format_str: 时间格式化字符串
        """
        self.datetime_obj = datetime_obj or datetime.now()
        self.format_str = format_str
    @property
    def yesterday(self) -> datetime:
        """获取昨天的日期"""
        return self.sub_time(days=1)
    @property
    def tomorrow(self) -> datetime:
        """获取明天的日期"""
        return self.add_time(days=1)
    @property
    def week_later(self) -> datetime:
        """获取一周后的日期"""
        return self.add_time(days=7)
    @property
    def month_later(self) -> datetime:
        """获取一个月后的日期"""
        return self.add_time(months=1)
    def add_time(self, years=0, months=0, days=0, hours=0, minutes=0, seconds=0, **kwargs) -> datetime:
        """增加指定时间"""
        return self.datetime_obj + relativedelta(
            years=years, months=months, days=days, hours=hours, minutes=minutes, seconds=seconds, **kwargs
        )
    def sub_time(self, years=0, months=0, days=0, hours=0, minutes=0, seconds=0, **kwargs) -> datetime:
        """减去指定时间"""
        return self.datetime_obj - relativedelta(
            years=years, months=months, days=days, hours=hours, minutes=minutes, seconds=seconds, **kwargs
        )
    def str_to_datetime(self, date_str: str, format_str: str = None) -> datetime:
        """将时间字符串转换为 datetime 对象"""
        format_str = format_str or self.format_str
        return datetime.strptime(date_str, format_str)
    def datetime_to_str(self, format_str: str = None) -> str:
        """将 datetime 对象转换为时间字符串"""
        format_str = format_str or self.format_str
        return self.datetime_obj.strftime(format_str)
    def timestamp_to_str(self, timestamp: float, format_str: str = None) -> str:
        """将时间戳转换为时间字符串"""
        format_str = format_str or self.format_str
        return datetime.fromtimestamp(timestamp).strftime(format_str)
    def str_to_timestamp(self, time_str: str, format_str: str = None) -> float:
        """将时间字符串转换为时间戳"""
        format_str = format_str or self.format_str
        return time.mktime(time.strptime(time_str, format_str))
    @staticmethod
    def timestamp_to_datetime(timestamp: float) -> datetime:
        """将时间戳转换为 datetime 对象"""
        return datetime.fromtimestamp(timestamp)
    @property
    def timestamp(self) -> float:
        """获取 datetime 对象的时间戳"""
        return self.datetime_obj.timestamp()
    def difference(self, other_datetime_obj: datetime, unit: Union[TimeUnitEnum, str] = TimeUnitEnum.DAYS) -> int:
        """
        计算两个日期之间的差值
        Args:
            other_datetime_obj: 另一个 datetime 对象
            unit: 时间单位
        Raises:
            ValueError: 如果传入unit不在枚举范围内，会抛出ValueError异常
        Returns:
            两个日期之间的差值，以指定的单位表示
        """
        if isinstance(unit, str):
            unit = TimeUnitEnum(unit)
        delta = abs(self.datetime_obj - other_datetime_obj)
        return int(delta.total_seconds() // self.UNITS_IN_SECONDS[unit])
    def difference_in_detail(self, datetime_obj: datetime):
        """
        计算两个日期之间的差值详情
        Args:
            datetime_obj: 时间对象
        Returns: DateDiff
        """
        delta = relativedelta(self.datetime_obj, datetime_obj)
        return DateDiff(
            years=abs(delta.years),
            months=abs(delta.months),
            days=abs(delta.days),
            hours=abs(delta.hours),
            minutes=abs(delta.minutes),
            seconds=abs(delta.seconds),
        )
    def count_weekdays_between(self, datetime_obj: datetime, include_end_date: bool = True) -> int:
        """计算两个日期之间的工作日数量
        Args:
            datetime_obj: datetime 对象
            include_end_date: 是否包含结束日期（默认为 True）
        Returns:
            两个日期之间的工作日数量
        """
        # 确保 start_date 是较小的日期，end_date 是较大的日期
        start_date = min(self.datetime_obj, datetime_obj)
        end_date = max(self.datetime_obj, datetime_obj)
        # 如果不包含结束日期，将 end_date 减去一天
        if not include_end_date:
            end_date = end_date - relativedelta(days=1)
        # 计算两个日期之间的天数
        days_between = abs((end_date - start_date).days)
        # 计算完整周数，每周有5个工作日
        weeks_between = days_between // 7
        weekdays = weeks_between * 5
        # 计算剩余的天数
        remaining_days = days_between % 7
        # 遍历剩余的天数，检查每天是否为工作日，如果是，则累加工作日数量
        for day_offset in range(remaining_days + 1):
            if (start_date + relativedelta(days=day_offset)).weekday() < 5:
                weekdays += 1
        return weekdays

#!/usr/bin/Python3
# -*- coding: utf-8 -*-
# @Author: Hui
# @Desc: { 时间工具类案例 }
# @Date: 2023/04/30 21:08
import time
from datetime import datetime
from utils.time import TimeUtil
# 创建一个TimeUtil实例，默认使用当前时间
time_util = TimeUtil()
print("昨天的日期:", time_util.yesterday)
print("明天的日期:", time_util.tomorrow)
print("一周后的日期:", time_util.week_later)
print("一个月后的日期:", time_util.month_later)
>>>out
昨天的日期: 2023-04-29 21:10:56.642787
明天的日期: 2023-05-01 21:10:56.642787
一周后的日期: 2023-05-07 21:10:56.642787
一个月后的日期: 2023-05-30 21:10:56.642787

# 从现在开始增加10天
print("10天后的日期:", time_util.add_time(days=10))
# 从现在开始减少5天
print("5天前的日期:", time_util.sub_time(days=5))
>>>out
10天后的日期: 2023-05-10 21:28:35.587173
5天前的日期: 2023-04-25 21:28:35.587173

# 将日期字符串转换为datetime对象
date_str = "2023-05-01 12:00:00"
print("字符串转换为datetime对象:", time_util.str_to_datetime(date_str))
# 将datetime对象转换为日期字符串
print("datetime对象转换为字符串:", time_util.datetime_to_str())
# 将时间戳转换为时间字符串
timestamp = time.time()
print("时间戳转换为时间字符串:", time_util.timestamp_to_str(timestamp))
# 将时间字符串转换为时间戳
time_str = "2023-05-01 12:00:00"
print("时间字符串转换为时间戳:", time_util.str_to_timestamp(time_str))
# 将时间戳转换为datetime对象
print("时间戳转换为datetime对象:", time_util.timestamp_to_datetime(timestamp))
# 获取当前时间的时间戳
print("当前时间的时间戳:", time_util.timestamp)
>>>out
字符串转换为datetime对象: 2023-05-01 12:00:00
datetime对象转换为字符串: 2023-04-30 21:28:35
时间戳转换为时间字符串: 2023-04-30 21:28:35
时间字符串转换为时间戳: 1682913600.0
时间戳转换为datetime对象: 2023-04-30 21:28:35.589926
当前时间的时间戳: 1682861315.587173

# 获取两个日期之间的差值
time_util = TimeUtil(datetime_obj=datetime(2023, 4, 24, 10, 30, 0))
datetime_obj = datetime(2023, 4, 29, 10, 30, 0)
delta_days = time_util.difference(datetime_obj, unit="days")
delta_hours = time_util.difference(datetime_obj, unit="hours")
delta_minutes = time_util.difference(datetime_obj, unit=TimeUnitEnum.MINUTES)
delta_seconds = time_util.difference(datetime_obj, unit=TimeUnitEnum.SECONDS)
print(f"两个日期之间相差的天数: {delta_days}")
print(f"两个日期之间相差的小时数: {delta_hours}")
print(f"两个日期之间相差的分钟数: {delta_minutes}")
print(f"两个日期之间相差的秒数: {delta_seconds}")
>>>out
两个日期之间相差的天数: 5
两个日期之间相差的小时数: 120
两个日期之间相差的分钟数: 7200
两个日期之间相差的秒数: 432000

date1 = datetime(2023, 4, 24)  # 2023年4月24日，星期一
date2 = datetime(2023, 5, 1)  # 2023年5月1日，星期一
time_util = TimeUtil(datetime_obj=date1)
# 计算两个日期之间的工作日数量
weekday_count = time_util.count_weekdays_between(date2, include_end_date=True)
print(f"从 {date1} 到 {date2} 之间有 {weekday_count} 个工作日。(包含末尾日期)")
weekday_count = time_util.count_weekdays_between(date2, include_end_date=False)
print(f"从 {date1} 到 {date2} 之间有 {weekday_count} 个工作日。(不包含末尾日期)")
date_diff = time_util.difference_in_detail(date2)
print(date_diff)
>>>out
从 2023-04-24 00:00:00 到 2023-05-01 00:00:00 之间有 6 个工作日。(包含末尾日期)
从 2023-04-24 00:00:00 到 2023-05-01 00:00:00 之间有 5 个工作日。(不包含末尾日期)
DateDiff(years=0, months=0, days=7, hours=0, minutes=0, seconds=0)