本文整理汇总了Python中PyQt5.QtCore.QDate.isNull方法的典型用法代码示例。如果您正苦于以下问题：Python QDate.isNull方法的具体用法？Python QDate.isNull怎么用？Python QDate.isNull使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt5.QtCore.QDate的用法示例。
在下文中一共展示了QDate.isNull方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: print
# 需要导入模块: from PyQt5.QtCore import QDate [as 别名]
# 或者: from PyQt5.QtCore.QDate import isNull [as 别名]
party = component.create()
if party is not None and party.host is not None:
print("\"%s\" is having a birthday!" % party.host.name)
if isinstance(party.host, Boy):
print("He is inviting:")
else:
print("She is inviting:")
for guest in party.guests:
attached = qmlAttachedPropertiesObject(BirthdayParty, guest, False)
if attached is not None:
rsvpDate = attached.property('rsvp')
else:
rsvpDate = QDate()
if rsvpDate.isNull():
print(" \"%s\" RSVP date: Hasn't RSVP'd" % guest.name)
else:
print(" \"%s\" RSVP date: %s" % (guest.name, rsvpDate.toString()))
party.startParty()
else:
for e in component.errors():
print("Error:", e.toString());
sys.exit(app.exec_())