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# coding=utf8
from __future__ import unicode_literals, absolute_import, print_function
import datetime
import time
import pytz
from django.conf import settings
from django.utils import timezone
def get_timestamp_epoch(the_time):
if the_time is None:
return None
if isinstance(the_time, str):
try:
the_time = datetime.datetime.strptime(the_time, "%Y-%m-%d %H:%M:%S")
except ValueError:
raise ValueError('time string must in <%Y-%m-%d %H:%M:%S> format')
if isinstance(the_time, datetime.datetime):
pass
elif isinstance(the_time, datetime.date):
# TODO: 是这样算的么？
the_time = datetime.datetime(
the_time.year, the_time.month, the_time.day)
else:
raise TypeError(
"datetime.datetime or datetime.date expected. [%s]" % type(the_time))
return int((the_time - datetime.datetime.fromtimestamp(0)).total_seconds())
def get_timestamp(the_time):
if the_time is None:
return None
return get_timestamp_epoch(the_time) + 8 * 3600
def get_datetime(the_time):
return datetime.datetime.utcfromtimestamp(the_time)
def get_timestamp_or_none(the_time):
return get_timestamp(the_time) if the_time is not None else None
def week_monday(date):
"""
返回date所属周的周一
"""
return add_day(date, -date.isoweekday() + 1)
def get_monday(day=None):
"""
返回输入日期的当星期的星期一的日期
:param day: 输入日期
:return: 输入日期的星期的星期一
"""
if not day:
day = datetime.date.today()
return week_monday(day)
def get_humanize_datetime(d):
"""humanize datetime
"""
now = datetime.datetime.now()
if d.year == now.year:
if d.month == now.month:
if d.day == now.day:
return u'今天'
else:
return u'{}天前'.format(now.day - d.day)
else:
return d.strftime('%m-%d')
else:
return d.strftime('%Y-%m-%d')
def get_seconds_left_to_end_of_day():
now = timezone.now()
end_of_day = datetime.datetime.combine(now, datetime.time.max)
time_delta = end_of_day - now
return int(time_delta.total_seconds())
def add_month(dt, n):
return datetime.date(
dt.year + (dt.month + n - 1) / 12,
(dt.month + n) % 12 or 12,
dt.day,
)
def add_day(dt, n):
return dt + datetime.timedelta(days=n)
def tzlc(dt, truncate_to_sec=True):
if dt is None:
return None
if truncate_to_sec:
dt = dt.replace(microsecond=0)
return pytz.timezone(settings.TIME_ZONE).localize(dt)
def ts_now_as_score():
return int(time.mktime(timezone.now().timetuple()))
MIN_TIME = tzlc(datetime.datetime.utcfromtimestamp(0))
MAX_TIME = tzlc(datetime.datetime.utcfromtimestamp(2147483647))