python时间的一些处理 #Python

time_dealer.py

# 获取昨天今天明天日期：
yesterday = time.strftime('%Y-%m-%d',time.localtime(time.time() - 24*60*60))
today = time.strftime("%Y-%m-%d", time.localtime(time.time()))
tomorrow =  time.strftime('%Y-%m-%d',time.localtime(time.time() + 24*60*60))

# 字符串转时间戳与时间戳转字符串：
timeArray = time.strptime(atimestr, "%Y-%m-%d %H:%M:%S")
thistime = time.mktime(timeArray)

value = time.localtime(timestramp)
thistimestr = time.strftime('%Y-%m-%d %H:%M:%S', value)

# 获取现在时间格式化字符串：
utime = time.strftime("%Y-%m-%d %H:%M:%S")

# Python asctime()转化回来：
atime = 'Thu Nov 10 17:10:44 2016'
time.strptime(atime, "%a %b %d %H:%M:%S %Y")

time_note.py

# %Y-%m-%d %H:%M:%S

# YYYY-MM-DD
arrow.get(value).to('local').format('YYYY-MM-DD HH:mm:ss’)

# marshmallow处理时间序列化、反序列化：
# 输入为任意格式，输出为指定格式。
                                    
class DateTimeField(fields.Field):
    def _serialize(self, value, attr, obj):
        return arrow.get(value).to('local').format('YYYY-MM-DD HH:mm:ss')

    def _deserialize(self, value, attr, data):
        return arrow.get(value).datetime

第一秒.py

import arrow

# 以东八区上海时间的第一秒为准.
def get_year_first_seconget_year_first_secondd(year):
    year_str = str(year) + '-01-01'
    return arrow.get(year_str).timestamp - 8 * 60 * 60


def get_today_first_second():
    return arrow.get().timestamp - arrow.get().to('Asia/Shanghai').hour * 60 * 60 - arrow.get().minute * 60 - arrow.get().second


def get_month_first_second(year, month):
    s = str(year)
    if month < 10:
        s += '-0' + str(month)
    else:
        s += '-' + str(month)
    s += '-01'
    return arrow.get(s).timestamp - 8 * 60 * 60
  
  
def get_next_month_first_second(year, month):
    if month == 12:
        return get_month_first_second(year+1, 1)
    else:
        return get_month_first_second(year, month+1)


def get_this_week_first_second():
    weekday_today = arrow.get().to('Asia/Shanghai').weekday()
    return arrow.get(get_today_first_second()).to('Asia/Shanghai').shift(days=-weekday_today).timestamp