Object timedelta tzinfo timezone time date datetime Common Properties ¶ Time adjustment (for example, to account for time zone and/or daylight savingĪ class that implements the tzinfo abstract base class as a These are used by theĭatetime and time classes to provide a customizable notion of tzinfoĪn abstract base class for time zone information objects. Or datetime instances to microsecond resolution. Attributes: year, month,Ī duration expressing the difference between two date, time, (There is no notion of “leap seconds” here.)Īttributes: hour, minute, second, microsecond,Ī combination of a date and a time. Attributes: year, month, andĪn idealized time, independent of any particular day, assuming that every day dateĪn idealized naive date, assuming the current Gregorian calendar always was, andĪlways will be, in effect. The largest year number allowed in a date or datetime object. The smallest year number allowed in a date or datetime object. The datetime module exports the following constants: datetime. Standard suitable for every application aside from UTC.
World are more political than rational, change frequently, and there is no Supporting timezones at deeper levels ofĭetail is up to the application. Represent simple timezones with fixed offsets from UTC, such as UTC itself or Only one concrete tzinfo class, the timezone class, is Time, the time zone name, and whether daylight saving time is in effect. These tzinfo objects capture information about the offset from UTC Objects have an optional time zone information attribute, tzinfo, thatĬan be set to an instance of a subclass of the abstract tzinfo class. Understand and to work with, at the cost of ignoring some aspects of reality.įor applications requiring aware objects, datetime and time Particular number represents metres, miles, or mass. Purely up to the program, just like it is up to the program whether a Whether a naive object representsĬoordinated Universal Time (UTC), local time, or time in some other timezone is Itself relative to other date/time objects. With sufficient knowledge of applicable algorithmic and political timeĪdjustments, such as time zone and daylight saving time information,Īn aware object can locate itself relative to other aware objects.Īn aware object represents a specific moment in time that is not open toĪ naive object does not contain enough information to unambiguously locate Whether or not they include timezone information. Aware and Naive Objects ¶ĭate and time objects may be categorized as “aware” or “naive” depending on Third-party library with expanded time zone and parsing support. Module zoneinfoĬoncrete time zones representing the IANA time zone database. The ability for the expulsion effect is determined by the nature of equilibrium formed by the neutralization within the unit cell of a superconductor.General calendar related functions. The experiment demonstrated for the first time that superconductors were more than just perfect conductors and provided a uniquely defining property of the superconductor state. The German physicists Walther Meissner and Robert Ochsenfeld discovered this phenomenon in 1933 by measuring the magnetic field distribution outside superconducting tin and lead samples. This expulsion will repel a nearby magnet. The Meissner effect (or Meissner–Ochsenfeld effect) is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state when it is cooled below the critical temperature. More resourcesĪnd now for something completely different You can read the Steering Council communication about it here to learn more. In previous pre-releases but it has been postponed to Python 3.11 due to some compatibility concerns.
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