119 lines
2.5 KiB
Python
119 lines
2.5 KiB
Python
# -*- coding: UTF-8 -*-
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import calendar
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from datetime import timedelta
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from django.utils import timezone
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def timestamp_of(d):
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if hasattr(d, 'isoformat'):
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return calendar.timegm(d.utctimetuple())
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return None
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def now():
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return timezone.localtime(timezone.now())
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def midnight():
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return now().replace(hour=0, minute=0, second=0, microsecond=0)
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def is_today(tme):
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if day_of(tme) != day_of(midnight()):
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return False
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return True
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def current_time_n(n):
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return now() - timedelta(days=n)
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def day_n(n):
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"""Midnight of N days ago."""
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return midnight() - timedelta(days=n)
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def day_of(d):
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"""Returns date part."""
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return str(d.date())
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def midnight_of(d):
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"""
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Args:
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d : datetime object
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Return:
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Midnight of datetime.
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"""
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d = timezone.localtime(d)
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return d.replace(hour=0, minute=0, second=0, microsecond=0)
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def day_start(date):
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""" 返回 date 这天的开始时间
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Args:
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date: `Datetime` 对象
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Returns:
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返回 date 这天的开始时间（0 点），`Datetime` 对象
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"""
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return timezone.localtime(date).replace(hour=0, minute=0, second=0,
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microsecond=0)
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def week_start(date):
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""" 返回 date 这天所在周的开始时间
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Args:
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date: `Datetime` 对象
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Returns:
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返回 date 这天所在周开始时间（周一），`Datetime` 对象
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"""
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return timezone.localtime(date) + dateutil.relativedelta.relativedelta(
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weekday=dateutil.relativedelta.MO(-1), hour=0, minute=0, second=0,
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microsecond=0)
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def month_start(d):
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""" 返回 date 这天所在月的开始时间
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Args:
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date: `Datetime` 对象
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Returns:
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返回 date 这天所在月的开始时间（1号），`Datetime` 对象
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"""
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return timezone.localtime(d) + dateutil.relativedelta.relativedelta(
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day=1, hour=0, minute=0, second=0, microsecond=0)
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def month_end(d):
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"""返回 date 这天所在月的结束时间，即最后一天的 23:59:59
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Args:
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data: `Datetime` 对象
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Returns:
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返回 date 这天所在月的最后一天的 23:59:59 的时间
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"""
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start = month_start(d)
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month_days = calendar.monthrange(start.year, start.month)[1]
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return start + timedelta(days=month_days, seconds=-1)
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def year_start(d):
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""" 返回 date 这天所在年的开始时间
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Args:
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date: `Datetime` 对象
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Returns:
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返回 date 这天所在年的开始时间（1月 1号），`Datetime` 对象
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"""
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return timezone.localtime(d) + dateutil.relativedelta.relativedelta(
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month=1, day=1, hour=0, minute=0, second=0, microsecond=0)
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