6 examples of 'python calculate time difference' in Python

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def compute_time(is_hourly):
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    """Figure out the proper start and end time"""
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    utcnow = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
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    utcnow = utcnow.replace(minute=0, second=0, microsecond=0)
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    if is_hourly:
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        lasthour = utcnow - datetime.timedelta(minutes=60)
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        sts = lasthour.replace(minute=0)
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        ets = lasthour.replace(minute=59)
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    else:
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        yesterday = utcnow - datetime.timedelta(hours=24)
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        sts = yesterday.replace(hour=0)
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        ets = sts.replace(hour=23, minute=59)
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    return sts, ets

501
def compute_timediff_seconds(time1_str, time2_str):
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    if re.match('\+[0-9][0-9]:[0-9][0-9]', time1_str[-6:]):
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        time1_str = time1_str[:-6]
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        time2_str = time2_str[:-6]
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    datetime1 = datetime.strptime(time1_str,
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                                  '%Y-%m-%dT%H:%M:%S.%f')
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    datetime2 = datetime.strptime(time2_str,
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                                  '%Y-%m-%dT%H:%M:%S.%f')
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    print("time difference {}".format((datetime2 - datetime1)))
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    diff = (datetime2 - datetime1).total_seconds()
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    return diff

83
def time_difference_UTC(otherdate):
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    return humanize_date_difference(now=datetime.datetime.utcnow(),
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                                    otherdate=otherdate)

38
def timediff(a, b):
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    delta = b - a
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    if hasattr(delta, 'total_seconds'):
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        return delta.total_seconds()
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    ret = abs(delta.days * 86400)
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    ret += abs(delta.seconds) 
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    ret += abs(delta.microseconds / 1000000.0)
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    if b < a:
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        return -ret
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    return ret

24
@filters.app_template_filter("timediff")
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def timediff(time):
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    """Return the difference in seconds between now and the given time."""
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    now = datetime.datetime.utcnow()
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    diff = now - time
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    diff_sec = diff.total_seconds()
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    return diff_sec

102
def get_rel_delta(self):
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    return relativedelta(years=self.time_obj.tm_year  * self.defined_values[0],
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                         months=self.time_obj.tm_mon  * self.defined_values[1] - 1,
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                         days=self.time_obj.tm_mday   * self.defined_values[2],
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                         hours=self.time_obj.tm_hour  * self.defined_values[3],
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                         minutes=self.time_obj.tm_min * self.defined_values[4],
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                         seconds=self.time_obj.tm_sec * self.defined_values[5]).normalized()