pyqt5显示日期与时间

日期与时间"/>

pyqt5显示日期与时间

PyQt5具有QDate，QDateTime，QTime类来处理日期和时间。 QDate是用于使用公历中的日历日期的类。 它具有确定日期，比较或处理日期的方法。 QTime类使用时钟时间。 它提供了比较时间，确定时间的方法以及其他各种时间操纵方法。 QDateTime是将QDate和QTime对象都组合到一个对象中的类。

1. 当前日期和时间

PyQt5具有currentDate（），currentTime（）和currentDateTime（）方法来确定当前日期和时间。

#fileName: current_date_time.py
from PyQt5.QtCore import QDate, QTime, QDateTime, Qtnow = QDate.currentDate()
print(now.toString(Qt.ISODate))
print(now.toString(Qt.DefaultLocaleLongDate))datetime = QDateTime.currentDateTime()print(datetime.toString())time = QTime.currentTime()
print(time.toString(Qt.DefaultLocaleLongDate))

2.UTC时间

#fileName: utc_local.pyfrom PyQt5.QtCore import QDateTime, Qtnow = QDateTime.currentDateTime()print("Local dateTime:", now.toString(Qt.ISODate))
print("Universal datetime:", now.toUTC().toString(Qt.ISODate))print("The offset from UTC is: {0} seconds".format(now.offsetFromUtc()))

3.计算天数差异

#fileName: xmas.pyfrom PyQt5.QtCore import QDatexmas1 = QDate(2016, 12, 24)
xmas2 = QDate(2017, 12, 24)now = QDate.currentDate()dayspassed = xmas1.daysTo(now)
print("{0} days have passed since last XMas".format(dayspassed))nofdays = now.daysTo(xmas2)
print("There are {0} days until next XMas".format(nofdays))

4.日期时间算法

#fileName:arithmetic.pyfrom PyQt5.QtCore import QDateTime, Qtnow = QDateTime.currentDateTime()print("Today:", now.toString(Qt.ISODate))
print("Adding 12 days:{0}".format(now.addDays(12).toString(Qt.ISODate)))
print("Subtracting 22 days:{0}".format(now.addDays(-22).toString(Qt.ISODate)))print("Adding 50 seconds:{0}".format(now.addSecs(50).toString(Qt.ISODate)))
print("Adding 3 seconds:{0}".format(now.addSecs(3).toString(Qt.ISODate)))
print("Adding 12 seconds:{0}".format(now.addSecs(12).toString(Qt.ISODate)))

5.夏令时

#fineName: daylight_saving.pyfrom PyQt5.QtCore import QDateTime, QTimeZone, Qtnow = QDateTime.currentDateTime()print("Time zone:{0}".format(now.timeZoneAbbreviation()))if now.isDaylightTime():print("The current date falls into DST time")
else:print("The current date does not fall into DST time")

6.Unix时间

#fileName: unix_time.pyfrom PyQt5.QtCore import QDateTime, Qtnow = QDateTime.currentDateTime()unix_time = now.toSecsSinceEpoch()
print(unix_time)d = QDateTime.fromSecsSinceEpoch(unix_time)
print(d.toString(Qt.ISODate))

7.朱利安日

#fileName: julian_day.py
from PyQt5.QtCore import QDate, Qtnow = QDate.currentDate()print("Gregorian date for today:", now.toString(Qt.ISODate))
print("Julian day for today:", now.toJulianDay())

8.历史战役

#fileName: battles.pyfrom PyQt5.QtCore import QDate, Qtborodino_battle = QDate(1812, 9, 7)
slavkov_battle = QDate(1805, 12, 2)now = QDate.currentDate()j_today = now.toJulianDay()
j_borodino = borodino_battle.toJulianDay()
j_slavkov = slavkov_battle.toJulianDay()d1 = j_today - j_slavkov
d2 = j_today - j_borodinoprint("Days since Slavkov battle:{0}".format(d1))
print("Days since Borodino battle:{0}".format(d2))

参考网址：

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