utils/time_util.py

# -*- coding:utf-8 –*-
import time
from datetime import datetime, timedelta


def convert_input_time(input_time, digit=13):
    if isinstance(input_time, (int, float)):
        stamp = stamp_pad(input_time, digit)
        return stamp
    elif isinstance(input_time, str):
        format_str = "%Y-%m-%d %H:%M:%S"
        if '/' in input_time:
            format_str = "%Y/%m/%d %H:%M:%S"
        elif ' ' not in input_time and ':' not in input_time:
            format_str = '%Y%m%d%H%M%S'
        stamp = convert_time_str(input_time, format_str, digit)
        return stamp
    else:
        raise ValueError('UnSupport type')


def stamp_pad(stamp, digit=10):
    stamp = int(stamp)
    length = len(str(stamp))
    if length < digit:
        stamp = int(str(stamp) + '0'*(digit-length))
    if length > digit:
        stamp = int(str(stamp)[:digit])
    return stamp


def convert_stamp(stamp, format_str="%Y-%m-%d %H:%M:%S"):
    date_time = time.strftime(format_str, time.localtime(stamp_pad(stamp, digit=10)))
    return date_time


def convert_time_str(time_str, format_str="%Y-%m-%d %H:%M:%S", digit=13):
    t = datetime.strptime(time_str, format_str).timestamp()
    return stamp_pad(t, digit)


def transform_format(time_str, dst_fmt="%Y-%m-%d %H:%M:%S"):
    stamp = convert_input_time(time_str, digit=10)
    return convert_stamp(stamp, dst_fmt)


# @clock_custom('[{elapsed:0.8f}s] {name}()')
# 计算两个时间戳的差值
def cal_stamps_diff(stamp1, stamp2):
    stamp1 = stamp_pad(stamp1)
    stamp2 = stamp_pad(stamp2)
    if stamp1 <= stamp2:
        diff = datetime.fromtimestamp(stamp2) - datetime.fromtimestamp(stamp1)
        return diff.seconds
    else:
        diff = datetime.fromtimestamp(stamp1) - datetime.fromtimestamp(stamp2)
        return -diff.seconds


# 速度快
# @clock_custom('[{elapsed:0.8f}s] {name}()')
def cal_diff_seconds(stamp1, stamp2):
    stamp1 = stamp_pad(stamp1)
    stamp2 = stamp_pad(stamp2)
    return stamp2-stamp1


# 计算数小时前的时间戳
def cal_yesterday_stamp(delta_hours=24):
    now = datetime.now()
    delta = timedelta(hours=delta_hours)
    before = (now-delta).timestamp()
    return stamp_pad(before)


def get_now_date():
    return time.strftime('%m%d', time.localtime(time.time()))


def get_today():
    return datetime.now().strftime('%Y%m%d')


def get_days_before(days=5):
    return (datetime.now() - timedelta(days=days)).strftime('%Y%m%d')


def get_date(day=0, time_str='%Y%m%d'):
    if day == 0:
        return datetime.now().strftime(time_str)
    elif day > 0:
        return (datetime.now() - timedelta(days=day)).strftime(time_str)


def get_season():
    month = int(datetime.now().strftime('%m'))
    if month <= 2 or month == 12:
        return 4
    elif month <= 5:
        return 1
    elif month <= 8:
        return 2
    else:
        return 3


class Timer:
    def __init__(self):
        # store the start time, end time, and total number of frames
        # that were examined between the start and end intervals
        self._start = None
        self._end = None
        self._numFrames = 0

    def start(self):
        # start the timer
        self._start = datetime.now()
        return self

    def stop(self):
        # stop the timer
        self._end = datetime.now()

    def update(self):
        # increment the total number of frames examined during the
        # start and end intervals
        self._numFrames += 1

    def elapsed(self):
        # return the total number of seconds between the start and
        # end interval
        return (self._end - self._start).total_seconds()

    def fps(self):
        # compute the (approximate) frames per second
        return self._numFrames / self.elapsed()


if __name__ == '__main__':
    print(convert_stamp(1625465966842))
    print(convert_time_str('2020-10-02 05:36:00'))
    print(convert_time_str('2020-10-02 06:46:00'))
    print(convert_input_time('20201208102335', digit=10))
    # print(convert_stamp(1595945099609, "%Y%m%d%H%M%S"))
    # stamp1 = 1594288522155
    # stamp2 = 1594288582019
    # cal_diff_seconds(stamp1, stamp2)
    # cal_stamps_diff(stamp1, stamp2)
    # print(get_now_date())
    # print((datetime.datetime.now()-datetime.timedelta(days=5)).strftime('%Y%m%d'))
"""
{"detectId":11,"startTime":1595945079609,"endTime":1595945119609,"commandId":"738411578604601345","deviceId":"03agptmyb2be9a2c","content":"{\"content\":\"\",\"fileType\":5,\"lat\":23.012758891079372,\"lng\":113.22142671753562,\"startTime\":1595945099670}","timestamp":1595945099609}
{"detectId":11,"startTime":1595945088792,"endTime":1595945128792,"commandId":"738412534595338240","deviceId":"03agptmyb2be9a2c","content":"{\"content\":\"\",\"fileType\":5,\"lat\":23.012758891079372,\"lng\":113.22142671753562,\"startTime\":1595945108854}","timestamp":1595945108792}
{"detectId":11,"startTime":1595945115257,"endTime":1595945155257,"commandId":"738414926988763136","deviceId":"03agph2zhgb56534","content":"{\"content\":\"\",\"fileType\":5,\"lat\":23.105039173700952,\"lng\":113.136789077983,\"startTime\":1595945135322}","timestamp":1595945135257}
""" \
""