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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: #allabouttrains
@sgmrt · Post #1975 · 24.06.2024 г., 04:09
📢 From 30 Jun, 📅 the Bukit Panjang LRT (BPLRT) will resume dual-loop services on Sundays ☀️ between 11am to 1pm and 5pm to 7pm.Refer to LTA's post for more info! 👀https://bit.ly/45HeGdN#SMRT#AllAboutTrains - SMRT
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@sgmrt · Post #2406 · 29.07.2025 г., 02:44
Train services on the 🚆 North-South, East-West, Circle & Thomson-East Coast Lines, and some 🚍 bus services will be extended for commuters travelling late on the eve of National Day, 8 Aug 2025 (Fri). 🇸🇬Please refer to the poster for more info. 👀#SMRT#AllAboutTrainshttps://bit.ly/4lTHYxg - SMRT
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@sgmrt · Post #2405 · 29.07.2025 г., 02:39
Train services on the 🚆 North-South, East-West, Circle & Thomson-East Coast Lines, and some 🚍 bus services will be extended for commuters travelling late on the eve of National Day, 8 Aug 2025 (Fri). 🇸🇬Please refer to the poster for more info. 👀#SMRT#AllAboutTrains - SMRT
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@sgmrt · Post #2354 · 26.05.2025 г., 09:04
Train services on the North-South, East-West, Circle & Thomson-East Coast Lines, and some bus services will be extended for commuters travelling late on the eve of Hari Raya Haji, 6 Jun 2025 (Fri) (after midnight). Refer to the poster for more info. #SMRT#AllAboutTrainshttps://bit.ly/4kcRGdi - SMRT
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@sgmrt · Post #2334 · 06.05.2025 г., 09:59
Train services on the North-South, East-West, Circle & Thomson-East Coast Lines, and some bus services will be extended for commuters travelling late on the eve of Vesak Day, 11 May 2025 (Sun) (after midnight). Refer to the poster for more info. #SMRT#AllAboutTrainshttps://bit.ly/4k8NOtm - SMRT
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@sgmrt · Post #2230 · 22.01.2025 г., 03:44
Train services on the North-South, East-West, Circle & Thomson-East Coast Lines, and some bus services will be extended for commuters travelling late on the eve of Chinese New Year, 28 Jan (after midnight). See poster for more info.🧧#SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/4g6JEzO - SMRT
@sgmrt · Post #2157 · 17.10.2024 г., 03:09
Train services on NSEWL, CCL, TEL and some bus services will be extended for commuters travelling late on the eve of Deepavali, 30 Oct 2024 (Wed). 🪔 See the poster for more info! 👀#SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/4dKOXni - SMRT
@sgmrt · Post #1947 · 31.05.2024 г., 02:09
Train services on the North-South, East-West, Circle & Thomson-East Coast Lines, and some bus services will be extended for commuters travelling late on the eve of Hari Raya Haji, 16 Jun 2024 (after midnight). Ref to the poster for more info. #SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/4bWEkx9 - SMRT
@sgmrt · Post #1902 · 04.04.2024 г., 02:29
Train services on North-South, East-West, Circle & Thomson-East Coast Lines, and some bus services will be extended for commuters travelling late on eve of Hari Raya Puasa, 9 Apr 2024 (after midnight). Ref to the poster for more info. #SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/3vLtQRF - SMRT
@sgmrt · Post #1864 · 11.12.2023 г., 09:05
Train services on the 🚆 North-South, East-West, Circle & Thomson-East Coast Lines, and some 🚍 bus services will be extended for commuters travelling late during the eve of Christmas and New Year. See the poster for more info. #SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/3NjRnyE - SMRT
@sgmrt · Post #1709 · 24.04.2023 г., 10:45
Train services on the 🚊 North-South, East-West, Circle & Thomson-East Coast Lines, and some 🚍 bus services will be extended for commuters travelling late on the eve of Labour Day, 30 April 2023. Refer to the poster for more info. 👀#SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/41RQZwf - SMRT
@sgmrt · Post #1583 · 05.01.2023 г., 05:16
Train services on the 🚆 North-South, East-West, Circle & Thomson-East Coast Lines, and some 🚍 bus services will be extended for commuters travelling late on the eve of Chinese New Year. 🧧 Refer to the poster for more info! 👀#SMRT#AllAboutTrains#AllAboutBuseshttps://bit.ly/3igIWI8 - SMRT