Python time.daylight() Examples

def test_strptime(self):
        import time
        d = time.strptime("July 3, 2006 At 0724 GMT", "%B %d, %Y At %H%M GMT")
        self.assertEqual(d[0], 2006)
        self.assertEqual(d[1], 7)
        self.assertEqual(d[2], 3)
        self.assertEqual(d[3], 7)
        self.assertEqual(d[4], 24)
        self.assertEqual(d[5], 0)
        self.assertEqual(d[6], 0)
        self.assertEqual(d[7], 184)

        #CodePlex Work Item 2557
        self.assertEqual((2006, 7, 3, 7, 24, 0, 0, 184, -1), time.strptime("%07/03/06 07:24:00", "%%%c"))
        self.assertEqual((1900, 6, 1, 0, 0, 0, 4, 152, -1), time.strptime("%6", "%%%m"))
        self.assertEqual((1942, 1, 1, 0, 0, 0, 3, 1, -1), time.strptime("%1942", "%%%Y"))
        self.assertEqual((1900, 1, 6, 0, 0, 0, 5, 6, -1), time.strptime("%6", "%%%d"))

        #self.assertEqual((1900, 7, 9, 19, 30, 0, 4, 190, -1), time.strptime('Fri, July 9 7:30 PM', '%a, %B %d %I:%M %p'))
        # TODO: day of the week does not work as expected
        self.assertEqual((1900, 7, 9, 19, 30, 0, 0, 190, -1), time.strptime('July 9 7:30 PM', '%B %d %I:%M %p'))
        # CPY & IPY differ on daylight savings time for this parse

        self.assertRaises(ValueError, time.strptime, "July 3, 2006 At 0724 GMT", "%B %x, %Y At %H%M GMT") 

def local_time_to_online(dt=None):
    """
       converts datetime object to a UTC timestamp for AGOL
       Inputs:
          dt - datetime object
       Output:
          Long value
    """
    if dt is None:
        dt = datetime.datetime.now()

    is_dst = time.daylight and time.localtime().tm_isdst > 0
    utc_offset =  (time.altzone if is_dst else time.timezone)

    return (time.mktime(dt.timetuple())  * 1000) + (utc_offset *1000)
#---------------------------------------------------------------------- 

def parseATTime(s, tzinfo=None):
    if tzinfo is None:
        tzinfo = pytz.utc
    s = s.strip().lower().replace('_', '').replace(',', '').replace(' ', '')
    if s.isdigit():
        if len(s) == 8 and int(s[:4]) > 1900 and int(
                s[4:6]) < 13 and int(s[6:]) < 32:
            pass  # Fall back because its not a timestamp, its YYYYMMDD form
        else:
            return datetime.fromtimestamp(int(s), tzinfo)
    elif ':' in s and len(s) == 13:
        return tzinfo.localize(datetime.strptime(s, '%H:%M%Y%m%d'), daylight)
    if '+' in s:
        ref, offset = s.split('+', 1)
        offset = '+' + offset
    elif '-' in s:
        ref, offset = s.split('-', 1)
        offset = '-' + offset
    else:
        ref, offset = s, ''
    return (
        parseTimeReference(ref) +
        parseTimeOffset(offset)).astimezone(tzinfo) 

def logmsg(request,type,message,args):
    is_dst = time.daylight and time.localtime().tm_isdst > 0
    tz =  - (time.altzone if is_dst else time.timezone) / 36
    if tz>=0:
        tz="+%04d"%tz
    else:
        tz="%05d"%tz
    datestr = '%d/%b/%Y %H:%M:%S'
    user = getattr(logStore,'user','')
    isValid = getattr(logStore,'isValid','')
    code = getattr(logStore,'code','')
    args = getLogDateTime(args)
    log = '%s %s,%s,%s,%s,%s,%s' % (datetime.now().strftime(datestr),tz,request.address_string(),user,isValid,code, message % args)
    with logLock:
        with open(cfg.logpath,'a') as fw:
            fw.write(log+os.linesep)
    return log 

def write_log(self, environ, method, req_uri, start, status, bytes):
        if bytes is None:
            bytes = '-'
        if time.daylight:
                offset = time.altzone / 60 / 60 * -100
        else:
                offset = time.timezone / 60 / 60 * -100
        if offset >= 0:
                offset = "+%0.4d" % (offset)
        elif offset < 0:
                offset = "%0.4d" % (offset)
        d = {
            'REMOTE_ADDR': environ.get('REMOTE_ADDR') or '-',
            'REMOTE_USER': environ.get('REMOTE_USER') or '-',
            'REQUEST_METHOD': method,
            'REQUEST_URI': req_uri,
            'HTTP_VERSION': environ.get('SERVER_PROTOCOL'),
            'time': time.strftime('%d/%b/%Y:%H:%M:%S ', start) + offset,
            'status': status.split(None, 1)[0],
            'bytes': bytes,
            'HTTP_REFERER': environ.get('HTTP_REFERER', '-'),
            'HTTP_USER_AGENT': environ.get('HTTP_USER_AGENT', '-'),
            }
        message = self.format % d
        self.logger.log(self.logging_level, message) 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            self.skipTest('need non-UTC/GMT timezone')
        try:
            original_tzname = time.tzname
            original_daylight = time.daylight
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name))
        finally:
            time.tzname = original_tzname
            time.daylight = original_daylight 

def Time2Internaldate(date_time):

    """Convert 'date_time' to IMAP4 INTERNALDATE representation.

    Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'
    """

    if isinstance(date_time, (int, float)):
        tt = time.localtime(date_time)
    elif isinstance(date_time, (tuple, time.struct_time)):
        tt = date_time
    elif isinstance(date_time, str) and (date_time[0],date_time[-1]) == ('"','"'):
        return date_time        # Assume in correct format
    else:
        raise ValueError("date_time not of a known type")

    dt = time.strftime("%d-%b-%Y %H:%M:%S", tt)
    if dt[0] == '0':
        dt = ' ' + dt[1:]
    if time.daylight and tt[-1]:
        zone = -time.altzone
    else:
        zone = -time.timezone
    return '"' + dt + " %+03d%02d" % divmod(zone//60, 60) + '"' 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            return
        try:
            original_tzname = time.tzname
            original_daylight = time.daylight
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name))
        finally:
            time.tzname = original_tzname
            time.daylight = original_daylight 

def Time2Internaldate(date_time):

    """'"DD-Mmm-YYYY HH:MM:SS +HHMM"' = Time2Internaldate(date_time)
    Convert 'date_time' to IMAP4 INTERNALDATE representation."""

    if isinstance(date_time, (int, float)):
        tt = time.localtime(date_time)
    elif isinstance(date_time, (tuple, time.struct_time)):
        tt = date_time
    elif isinstance(date_time, str) and (date_time[0],date_time[-1]) == ('"','"'):
        return date_time        # Assume in correct format
    else:
        raise ValueError("date_time not of a known type")

    if time.daylight and tt[-1]:
        zone = -time.altzone
    else:
        zone = -time.timezone
    return ('"%2d-%s-%04d %02d:%02d:%02d %+03d%02d"' %
            ((tt[2], MonthNames[tt[1]], tt[0]) + tt[3:6] +
             divmod(zone//60, 60))) 

def __calc_timezone(self):
        # Set self.timezone by using time.tzname.
        # Do not worry about possibility of time.tzname[0] == time.tzname[1]
        # and time.daylight; handle that in strptime.
        try:
            time.tzset()
        except AttributeError:
            pass
        self.tzname = time.tzname
        self.daylight = time.daylight
        no_saving = frozenset(["utc", "gmt", self.tzname[0].lower()])
        if self.daylight:
            has_saving = frozenset([self.tzname[1].lower()])
        else:
            has_saving = frozenset()
        self.timezone = (no_saving, has_saving) 

def test_timezone(self):
        # Test timezone directives.
        # When gmtime() is used with %Z, entire result of strftime() is empty.
        # Check for equal timezone names deals with bad locale info when this
        # occurs; first found in FreeBSD 4.4.
        strp_output = _strptime._strptime_time("UTC", "%Z")
        self.assertEqual(strp_output.tm_isdst, 0)
        strp_output = _strptime._strptime_time("GMT", "%Z")
        self.assertEqual(strp_output.tm_isdst, 0)
        time_tuple = time.localtime()
        strf_output = time.strftime("%Z")  #UTC does not have a timezone
        strp_output = _strptime._strptime_time(strf_output, "%Z")
        locale_time = _strptime.LocaleTime()
        if time.tzname[0] != time.tzname[1] or not time.daylight:
            self.assertTrue(strp_output[8] == time_tuple[8],
                            "timezone check failed; '%s' -> %s != %s" %
                             (strf_output, strp_output[8], time_tuple[8]))
        else:
            self.assertTrue(strp_output[8] == -1,
                            "LocaleTime().timezone has duplicate values and "
                             "time.daylight but timezone value not set to -1") 

def test_bad_timezone(self):
        # Explicitly test possibility of bad timezone;
        # when time.tzname[0] == time.tzname[1] and time.daylight
        tz_name = time.tzname[0]
        if tz_name.upper() in ("UTC", "GMT"):
            self.skipTest('need non-UTC/GMT timezone')

        with support.swap_attr(time, 'tzname', (tz_name, tz_name)), \
             support.swap_attr(time, 'daylight', 1), \
             support.swap_attr(time, 'tzset', lambda: None):
            time.tzname = (tz_name, tz_name)
            time.daylight = 1
            tz_value = _strptime._strptime_time(tz_name, "%Z")[8]
            self.assertEqual(tz_value, -1,
                    "%s lead to a timezone value of %s instead of -1 when "
                    "time.daylight set to %s and passing in %s" %
                    (time.tzname, tz_value, time.daylight, tz_name)) 

def __calc_timezone(self):
        # Set self.timezone by using time.tzname.
        # Do not worry about possibility of time.tzname[0] == timetzname[1]
        # and time.daylight; handle that in strptime .
        try:
            time.tzset()
        except AttributeError:
            pass
        no_saving = frozenset(["utc", "gmt", time.tzname[0].lower()])
        if time.daylight:
            has_saving = frozenset([time.tzname[1].lower()])
        else:
            has_saving = frozenset()
        self.timezone = (no_saving, has_saving) 

def test_data_attributes(self):
        time.altzone
        time.daylight
        time.timezone
        time.tzname 

def localtime(dt=None, isdst=-1):
    """Return local time as an aware datetime object.

    If called without arguments, return current time.  Otherwise *dt*
    argument should be a datetime instance, and it is converted to the
    local time zone according to the system time zone database.  If *dt* is
    naive (that is, dt.tzinfo is None), it is assumed to be in local time.
    In this case, a positive or zero value for *isdst* causes localtime to
    presume initially that summer time (for example, Daylight Saving Time)
    is or is not (respectively) in effect for the specified time.  A
    negative value for *isdst* causes the localtime() function to attempt
    to divine whether summer time is in effect for the specified time.

    """
    if dt is None:
        return datetime.datetime.now(datetime.timezone.utc).astimezone()
    if dt.tzinfo is not None:
        return dt.astimezone()
    # We have a naive datetime.  Convert to a (localtime) timetuple and pass to
    # system mktime together with the isdst hint.  System mktime will return
    # seconds since epoch.
    tm = dt.timetuple()[:-1] + (isdst,)
    seconds = time.mktime(tm)
    localtm = time.localtime(seconds)
    try:
        delta = datetime.timedelta(seconds=localtm.tm_gmtoff)
        tz = datetime.timezone(delta, localtm.tm_zone)
    except AttributeError:
        # Compute UTC offset and compare with the value implied by tm_isdst.
        # If the values match, use the zone name implied by tm_isdst.
        delta = dt - datetime.datetime(*time.gmtime(seconds)[:6])
        dst = time.daylight and localtm.tm_isdst > 0
        gmtoff = -(time.altzone if dst else time.timezone)
        if delta == datetime.timedelta(seconds=gmtoff):
            tz = datetime.timezone(delta, time.tzname[dst])
        else:
            tz = datetime.timezone(delta)
    return dt.replace(tzinfo=tz) 

def test_locale_data_w_regex_metacharacters(self):
        # Check that if locale data contains regex metacharacters they are
        # escaped properly.
        # Discovered by bug #1039270 .
        locale_time = _strptime.LocaleTime()
        locale_time.timezone = (frozenset(("utc", "gmt",
                                            "Tokyo (standard time)")),
                                frozenset("Tokyo (daylight time)"))
        time_re = _strptime.TimeRE(locale_time)
        self.assertTrue(time_re.compile("%Z").match("Tokyo (standard time)"),
                        "locale data that contains regex metacharacters is not"
                        " properly escaped") 

def test_default_values_for_zero(self):
        # Make sure that using all zeros uses the proper default values.
        # No test for daylight savings since strftime() does not change output
        # based on its value.
        expected = "2000 01 01 00 00 00 1 001"
        result = time.strftime("%Y %m %d %H %M %S %w %j", (0,)*9)
        self.assertEqual(expected, result) 

def utc_offset(): #NOTE: ignore issues like #1647654
    # local time = utc time + utc offset
    if time.daylight and time.localtime().tm_isdst > 0:
        return -time.altzone  # seconds
    return -time.timezone 

def test_locale_data_w_regex_metacharacters(self):
        # Check that if locale data contains regex metacharacters they are
        # escaped properly.
        # Discovered by bug #1039270 .
        locale_time = _strptime.LocaleTime()
        locale_time.timezone = (frozenset(("utc", "gmt",
                                            "Tokyo (standard time)")),
                                frozenset("Tokyo (daylight time)"))
        time_re = _strptime.TimeRE(locale_time)
        self.assertTrue(time_re.compile("%Z").match("Tokyo (standard time)"),
                        "locale data that contains regex metacharacters is not"
                        " properly escaped") 

def __calc_timezone(self):
        # Set self.timezone by using time.tzname.
        # Do not worry about possibility of time.tzname[0] == timetzname[1]
        # and time.daylight; handle that in strptime .
        try:
            time.tzset()
        except AttributeError:
            pass
        no_saving = frozenset(["utc", "gmt", time.tzname[0].lower()])
        if time.daylight:
            has_saving = frozenset([time.tzname[1].lower()])
        else:
            has_saving = frozenset()
        self.timezone = (no_saving, has_saving) 

def Time2Internaldate(date_time):

    """Convert date_time to IMAP4 INTERNALDATE representation.

    Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'.  The
    date_time argument can be a number (int or float) representing
    seconds since epoch (as returned by time.time()), a 9-tuple
    representing local time (as returned by time.localtime()), or a
    double-quoted string.  In the last case, it is assumed to already
    be in the correct format.
    """

    if isinstance(date_time, (int, float)):
        tt = time.localtime(date_time)
    elif isinstance(date_time, (tuple, time.struct_time)):
        tt = date_time
    elif isinstance(date_time, str) and (date_time[0],date_time[-1]) == ('"','"'):
        return date_time        # Assume in correct format
    else:
        raise ValueError("date_time not of a known type")

    dt = time.strftime("%d-%b-%Y %H:%M:%S", tt)
    if dt[0] == '0':
        dt = ' ' + dt[1:]
    if time.daylight and tt[-1]:
        zone = -time.altzone
    else:
        zone = -time.timezone
    return '"' + dt + " %+03d%02d" % divmod(zone//60, 60) + '"' 

def __init__(self):
        super(tzlocal, self).__init__()

        self._std_offset = datetime.timedelta(seconds=-time.timezone)
        if time.daylight:
            self._dst_offset = datetime.timedelta(seconds=-time.altzone)
        else:
            self._dst_offset = self._std_offset

        self._dst_saved = self._dst_offset - self._std_offset
        self._hasdst = bool(self._dst_saved)
        self._tznames = tuple(time.tzname) 

def Internaldate2Time(resp):

    """time_tuple = Internaldate2Time(resp)
    Convert IMAP4 INTERNALDATE to UT."""

    mo = InternalDate.match(resp)
    if not mo:
        return None

    mon = Mon2num[mo.group('mon')]
    zonen = mo.group('zonen')

    day = int(mo.group('day'))
    year = int(mo.group('year'))
    hour = int(mo.group('hour'))
    min = int(mo.group('min'))
    sec = int(mo.group('sec'))
    zoneh = int(mo.group('zoneh'))
    zonem = int(mo.group('zonem'))

    # INTERNALDATE timezone must be subtracted to get UT

    zone = (zoneh*60 + zonem)*60
    if zonen == '-':
        zone = -zone

    tt = (year, mon, day, hour, min, sec, -1, -1, -1)

    utc = time.mktime(tt)

    # Following is necessary because the time module has no 'mkgmtime'.
    # 'mktime' assumes arg in local timezone, so adds timezone/altzone.

    lt = time.localtime(utc)
    if time.daylight and lt[-1]:
        zone = zone + time.altzone
    else:
        zone = zone + time.timezone

    return time.localtime(utc - zone) 

def for_system(klass):
        """Return a FixedOffset instance for the current working timezone and
        DST conditions.
        """
        if time.localtime().tm_isdst and time.daylight:
            offset = time.altzone
        else:
            offset = time.timezone
        return klass(-offset // 60) 

def __calc_timezone(self):
        # Set self.timezone by using time.tzname.
        # Do not worry about possibility of time.tzname[0] == timetzname[1]
        # and time.daylight; handle that in strptime .
        try:
            time.tzset()
        except AttributeError:
            pass
        no_saving = frozenset(["utc", "gmt", time.tzname[0].lower()])
        if time.daylight:
            has_saving = frozenset([time.tzname[1].lower()])
        else:
            has_saving = frozenset()
        self.timezone = (no_saving, has_saving) 

def __init__(self):
        super(tzlocal, self).__init__()

        self._std_offset = datetime.timedelta(seconds=-time.timezone)
        if time.daylight:
            self._dst_offset = datetime.timedelta(seconds=-time.altzone)
        else:
            self._dst_offset = self._std_offset

        self._dst_saved = self._dst_offset - self._std_offset
        self._hasdst = bool(self._dst_saved)
        self._tznames = tuple(time.tzname) 

def localtime(dt=None, isdst=-1):
    """Return local time as an aware datetime object.

    If called without arguments, return current time.  Otherwise *dt*
    argument should be a datetime instance, and it is converted to the
    local time zone according to the system time zone database.  If *dt* is
    naive (that is, dt.tzinfo is None), it is assumed to be in local time.
    In this case, a positive or zero value for *isdst* causes localtime to
    presume initially that summer time (for example, Daylight Saving Time)
    is or is not (respectively) in effect for the specified time.  A
    negative value for *isdst* causes the localtime() function to attempt
    to divine whether summer time is in effect for the specified time.

    """
    if dt is None:
        return datetime.datetime.now(datetime.timezone.utc).astimezone()
    if dt.tzinfo is not None:
        return dt.astimezone()
    # We have a naive datetime.  Convert to a (localtime) timetuple and pass to
    # system mktime together with the isdst hint.  System mktime will return
    # seconds since epoch.
    tm = dt.timetuple()[:-1] + (isdst,)
    seconds = time.mktime(tm)
    localtm = time.localtime(seconds)
    try:
        delta = datetime.timedelta(seconds=localtm.tm_gmtoff)
        tz = datetime.timezone(delta, localtm.tm_zone)
    except AttributeError:
        # Compute UTC offset and compare with the value implied by tm_isdst.
        # If the values match, use the zone name implied by tm_isdst.
        delta = dt - datetime.datetime(*time.gmtime(seconds)[:6])
        dst = time.daylight and localtm.tm_isdst > 0
        gmtoff = -(time.altzone if dst else time.timezone)
        if delta == datetime.timedelta(seconds=gmtoff):
            tz = datetime.timezone(delta, time.tzname[dst])
        else:
            tz = datetime.timezone(delta)
    return dt.replace(tzinfo=tz) 

def __init__(self):
        super(tzlocal, self).__init__()

        self._std_offset = datetime.timedelta(seconds=-time.timezone)
        if time.daylight:
            self._dst_offset = datetime.timedelta(seconds=-time.altzone)
        else:
            self._dst_offset = self._std_offset

        self._dst_saved = self._dst_offset - self._std_offset
        self._hasdst = bool(self._dst_saved) 

def __init__(self):
        super(tzlocal, self).__init__()

        self._std_offset = datetime.timedelta(seconds=-time.timezone)
        if time.daylight:
            self._dst_offset = datetime.timedelta(seconds=-time.altzone)
        else:
            self._dst_offset = self._std_offset

        self._dst_saved = self._dst_offset - self._std_offset
        self._hasdst = bool(self._dst_saved) 

def test_data_attributes(self):
        time.altzone
        time.daylight
        time.timezone
        time.tzname