def timetuple():
"""Return a 9-element tuple of the form returned by time.localtime().
The hours, minutes and seconds are 0, and the DST flag is -1.
d.timetuple() is equivalent to
(d.year, d.month, d.day, 0, 0, 0, d.weekday(), d.toordinal() -
date(d.year, 1, 1).toordinal() + 1, -1)
"""
python类time()的实例源码
def ctime():
"""Return a string representing the date.
For example date(2002, 12, 4).ctime() == 'Wed Dec 4 00:00:00 2002'.
d.ctime() is equivalent to time.ctime(time.mktime(d.timetuple()))
on platforms where the native C ctime() function
(which time.ctime() invokes, but which date.ctime() does not invoke)
conforms to the C standard.
"""
def today():
"""Return the current local datetime, with tzinfo None.
This is equivalent to datetime.fromtimestamp(time.time()).
See also now(), fromtimestamp().
"""
def utcnow():
"""Return the current UTC date and time, with tzinfo None.
This is like now(), but returns the current UTC date and time, as a
naive datetime object.
See also now().
"""
def fromtimestamp(timestamp, tz=None):
"""Return the local date and time corresponding to the POSIX timestamp.
Same as is returned by time.time(). If optional argument tz is None or
not specified, the timestamp is converted to the platform's local date
and time, and the returned datetime object is naive.
Else tz must be an instance of a class tzinfo subclass, and the
timestamp is converted to tz's time zone. In this case the result is
equivalent to
tz.fromutc(datetime.utcfromtimestamp(timestamp).replace(tzinfo=tz)).
fromtimestamp() may raise ValueError, if the timestamp is out of the
range of values supported by the platform C localtime() or gmtime()
functions. It's common for this to be restricted to years in 1970
through 2038. Note that on non-POSIX systems that include leap seconds
in their notion of a timestamp, leap seconds are ignored by
fromtimestamp(), and then it's possible to have two timestamps
differing by a second that yield identical datetime objects.
See also utcfromtimestamp().
"""
def combine(date, time):
"""Return a new datetime object.
Its date members are equal to the given date object's, and whose time
and tzinfo members are equal to the given time object's. For any
datetime object d, d == datetime.combine(d.date(), d.timetz()).
If date is a datetime object, its time and tzinfo members are ignored.
"""
def time():
"""Return time object with same hour, minute, second, microsecond.
tzinfo is None. See also method timetz().
"""
def timetz():
"""Return time object with same hour, minute, second, microsecond,
and tzinfo.
See also method time().
"""
def astimezone(tz):
"""Return a datetime object with new tzinfo member tz, adjusting the
date and time members so the result is the same UTC time as self, but
in tz's local time.
tz must be an instance of a tzinfo subclass, and its utcoffset() and
dst() methods must not return None. self must be aware (self.tzinfo
must not be None, and self.utcoffset() must not return None).
If self.tzinfo is tz, self.astimezone(tz) is equal to self: no
adjustment of date or time members is performed. Else the result is
local time in time zone tz, representing the same UTC time as self:
after astz = dt.astimezone(tz), astz - astz.utcoffset()
will usually have the same date and time members as dt - dt.utcoffset().
The discussion of class tzinfo explains the cases at Daylight Saving
Time transition boundaries where this cannot be achieved (an issue only
if tz models both standard and daylight time).
If you merely want to attach a time zone object tz to a datetime dt
without adjustment of date and time members, use dt.replace(tzinfo=tz).
If you merely want to remove the time zone object from an aware
datetime dt without conversion of date and time members, use
dt.replace(tzinfo=None).
Note that the default tzinfo.fromutc() method can be overridden in a
tzinfo subclass to effect the result returned by astimezone().
"""
def timetuple():
"""Return a 9-element tuple of the form returned by time.localtime()."""
def utctimetuple():
"""Return UTC time tuple compatilble with time.gmtimr()."""
def isoformat(sep='T'):
"""Return a string representing the date and time in ISO 8601 format.
YYYY-MM-DDTHH:MM:SS.mmmmmm or YYYY-MM-DDTHH:MM:SS if microsecond is 0
If utcoffset() does not return None, a 6-character string is appended,
giving the UTC offset in (signed) hours and minutes:
YYYY-MM-DDTHH:MM:SS.mmmmmm+HH:MM or YYYY-MM-DDTHH:MM:SS+HH:MM
if microsecond is 0.
The optional argument sep (default 'T') is a one-character separator,
placed between the date and time portions of the result.
"""
def ctime():
"""Return a string representing the date and time.
datetime(2002, 12, 4, 20, 30, 40).ctime() == 'Wed Dec 4 20:30:40 2002'.
d.ctime() is equivalent to time.ctime(time.mktime(d.timetuple())) on
platforms where the native C ctime() function (which time.ctime()
invokes, but which datetime.ctime() does not invoke) conforms to the
C standard.
"""
def replace(hour, minute, second, microsecond, tzinfo):
"""Return a time with the same value.
Except for those members given new values by whichever keyword
arguments are specified. Note that tzinfo=None can be specified
to create a naive time from an aware time, without conversion of the
time members.
"""
def isoformat():
"""Return a string representing the time in ISO 8601 format.
That is HH:MM:SS.mmmmmm or, if self.microsecond is 0, HH:MM:SS
If utcoffset() does not return None, a 6-character string is appended,
giving the UTC offset in (signed) hours and minutes:
HH:MM:SS.mmmmmm+HH:MM or, if self.microsecond is 0, HH:MM:SS+HH:MM
"""
def __str__():
"""For a time t, str(t) is equivalent to t.isoformat()."""
def strftime(format):
"""Return a string representing the time.
This is controlled by an explicit format string.
"""
def utcoffset(dt):
"""Return offset of local time from UTC, in minutes east of UTC.
If local time is west of UTC, this should be negative.
Note that this is intended to be the total offset from UTC;
for example, if a tzinfo object represents both time zone and DST
adjustments, utcoffset() should return their sum. If the UTC offset
isn't known, return None. Else the value returned must be a timedelta
object specifying a whole number of minutes in the range -1439 to 1439
inclusive (1440 = 24*60; the magnitude of the offset must be less
than one day).
"""
def tzname(dt):
"""Return the time zone name corresponding to the datetime object as
a string.
"""
def fromutc(dt):
"""Return an equivalent datetime in self's local time."""
