Python 获取年、季度、月的开始和结束

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class DateUtils(object):
@staticmethod
def get_today_start():
now = arrow.utcnow().to("local")
return now.floor("day")

@staticmethod
def get_today_end():
now = arrow.utcnow().to("local")
return now.ceil("day")

@staticmethod
def get_today_start_end():
return DateUtils.get_today_start(), DateUtils.get_today_end()

@staticmethod
def get_week_start():
now = arrow.utcnow().to("local")
return now.floor("week")

@staticmethod
def get_week_end():
now = arrow.utcnow().to("local")
return now.ceil("week")

@staticmethod
def get_week_start_end():
return DateUtils.get_week_start(), DateUtils.get_week_end()

@staticmethod
def get_month_start():
now = arrow.utcnow().to("local")
return now.floor("month")

@staticmethod
def get_month_end():
now = arrow.utcnow().to("local")
return now.ceil("month")

@staticmethod
def get_month_start_end():
return DateUtils.get_month_start(), DateUtils.get_month_end()

@staticmethod
def get_quarter_start():
now = arrow.utcnow().to("local")
return now.floor("quarter")

@staticmethod
def get_quarter_end():
now = arrow.utcnow().to("local")
return now.ceil("quarter")

@staticmethod
def get_quarter_start_end():
return DateUtils.get_quarter_start(), DateUtils.get_quarter_end()

@staticmethod
def get_year_start():
now = arrow.utcnow().to("local")
return now.floor("year")

@staticmethod
def get_year_end():
now = arrow.utcnow().to("local")
return now.ceil("year")

@staticmethod
def get_year_start_end():
return DateUtils.get_year_start(), DateUtils.get_year_end()