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Изворен канал @pythonotes · Post #380 · 21 окт.
Регулярно приходится писать и ревьюить код, где используется PySide2-6. Заметил, что в подавляющем большинстве случаев настройка создаваемых базовых виджетов происходит через методы. Думаю, всем знаком такой способ. Простой пример с кнопкой: button = QPushButton("Click Me") button.setMinimumWidth(300) button.setFlat(True) button.setStyleSheet("font-size: 20pt") button.setToolTip("Super Button") button.clicked.connect(lambda: print("Button clicked")) Но есть и альтернативный способ - настройка через свойства. Это просто ключевые аргументы конструктора класса. Хоть они и не указаны в документации как аргументы, но они есть) Этот код делает тоже самое но с помощью Property button = QPushButton( "Click Me", minimumWidth=300, flat=True, styleSheet="font-size: 20pt", toolTip="Super Button", clicked=lambda: print("Button clicked"), ) Где это может быть полезно ▫️ Это выглядит более аккуратно и коротко, уже повод использовать ▫️ Может использоваться в заполнении лейаута, когда нам не нужно никакое другое взаимодействие с виджетом и поэтому сохранять его в переменную не требуется. Например, лейбл или кнопка. widget = QWidget(minimumWidth=400) layout = QHBoxLayout(widget) layout.addWidget(QLabel("Button >", alignment=Qt.AlignRight)) layout.addWidget(QPushButton("Click Me", clicked=lambda: print("Button clicked"))) widget.show() Либо так widget = QWidget(minimumWidth=400) layout = QHBoxLayout(widget) for wd in ( QLabel("Button >", alignment=Qt.AlignRight), QPushButton("Click Me", clicked=lambda: ...) ): layout.addWidget(wd) widget.show() ▫️ Можно хранить настройки в каком-то конфиге или генерировать на лету, после чего передавать как kwargs. kwargs = {"text": "Hello " * 30, "wordWrap": True} my_label = QLabel(**kwargs) Как получить полный список доступных свойств? Эта функция распечатает в терминал все свойства виджета и их текущие значения def print_widget_properties(widget): meta_object = widget.metaObject() for i in range(meta_object.propertyCount()): property_ = meta_object.property(i) property_name = property_.name() property_value = property_.read(widget) print(f"{property_name}: {property_value}") #tricks#qt
Пребарај: #newtgingrich
@newtgingrich · Post #4714 · 23.05.2023 г., 13:45
#newtgingrich : RT @AmerNewMajProj: Just 1 in 5 Americans agree with Biden and the Democrats that slowing the rate of spending increases is an irresponsible cut. https://t.co/Z6QdnPa5iW
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@newtgingrich · Post #4713 · 23.05.2023 г., 08:44
#newtgingrich : RT @SpeakerMcCarthy: President Biden and I just had a productive meeting in our negotiation to responsibly raise the debt limit. It should have happened months ago, but there is a path for him to avoid defaulting on the debt. https://t.co/u3rDJmrl7v
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@newtgingrich · Post #4712 · 23.05.2023 г., 00:43
#newtgingrich : I'll be on Hannity tonight at 9:00 pm ET. Watch on @FoxNews@seanhannity
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@newtgingrich · Post #4711 · 22.05.2023 г., 23:44
#newtgingrich : RT @AmerNewMajProj: 75 percent of Americans support abortion restrictions of some kind. https://t.co/vbRbF5w3LI
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@newtgingrich · Post #4710 · 22.05.2023 г., 18:46
#newtgingrich : The American people see strong leadership from Speaker Kevin McCarthy, and the latest polls have his favorability as the highest among Congressional leadership. https://t.co/nv7UcCb3Tc
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@newtgingrich · Post #4709 · 22.05.2023 г., 17:44
#newtgingrich : RT @GOP: .@SpeakerMcCarthy: “The Democrats since they took the majority have been addicted to spending and that’s going to stop. We’re going to spend less than we spent last year.” https://t.co/cqu1xLLsWA
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@newtgingrich · Post #4708 · 22.05.2023 г., 17:44
#newtgingrich : RT @CallyGingrich: Human trafficking survivors recently testified before members of the U.S. House of Representatives about the need for lawmakers to pass legislation to increase resources for survivors and expand efforts to hold perpetrators accountable. https://t.co/MedJ3mILN0https://t.co/oeqSNDl86E
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@newtgingrich · Post #4706 · 21.05.2023 г., 22:43
#newtgingrich : RT @SpeakerMcCarthy: I literally asked the president: "What is the number? How much debt must America have before you say, 'let's stop borrowing from China?'" https://t.co/nAd1wMtDOw
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@newtgingrich · Post #4705 · 21.05.2023 г., 21:43
#newtgingrich : RT @SpeakerMcCarthy: Just got off the phone with the president while he’s out of the country. My position has not changed. Washington cannot continue to spend money we do not have at the expense of children and grandchildren. Tomorrow, he and I will meet in person to continue negotiations.
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@newtgingrich · Post #4704 · 21.05.2023 г., 17:43
#newtgingrich : The University of Austin, TX, is taking a new innovative approach to improving the American education model. Interesting reading. @AcademicRenewal https://t.co/I1dEFJnKuq
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@newtgingrich · Post #4702 · 21.05.2023 г., 13:43
#newtgingrich : We are a lot closer to the Biden default with the President’s game playing and arrogance. House Republicans will NEVER support a Biden tax increase. Biden’s comments in Japan were dishonest and destructive. If we default it will be Biden who forced it.
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@newtgingrich · Post #4701 · 21.05.2023 г., 13:43
#newtgingrich : Speaker McCarthy and House Republicans have a tremendous opportunity to create a better American future. @amspectator https://t.co/ibQaV07PsC
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