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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: #climateactionsg
@NEASingapore · Post #50 · 04.05.2020 г., 05:04
It’s May the 4th! Saving the earth is in your hands, so may the force be with you. Like ice cream in this hot Singapore weather, the earth’s great ice caps are melting due to global warming! It’s time to ask ourselves if we have done enough for the earth. If not, start here: www.mewr.gov.sg/climateaction#ClimateActionSG
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@NEASingapore · Post #1043 · 20.05.2025 г., 01:03
💰 Save around $80 annually when you upgrade your refrigerator from 1-tick to 3-tick or above! 🌱 Take climate action by switching to more energy- and water-efficient appliances with your Climate Vouchers! The Climate Friendly Households Programme now offers: 🎉 Additional $100 in Climate Vouchers, on top of the $300 in 2024 for eligible HDB households (total $400!) 🏠 Now extended to all Singapore Citizen households in private properties too ⏰ Valid until 31 Dec 2027 👉 For more details: go.gov.sg/cfhp-info #EnergyEfficiency#ClimateActionSG#SustainableSG
@NEASingapore · Post #1041 · 13.05.2025 г., 03:39
💡✨ Bright savings are just a switch away. Switch 5 compact fluorescent lamps for 2-tick LED bulbs and save $32 a year! Take climate action by switching to more energy- and water-efficient appliances with your Climate Vouchers. ✅ The Climate Friendly Households Programme now offers an additional $100 in Climate Vouchers, on top of the $300 offered in 2024 for eligible HDB households. ✅ The programme has also been expanded to include Singapore Citizen households living in private residential properties in 2025. ✅ This means that all eligible HDB and private households have been issued $400 worth of Climate Vouchers. These vouchers are valid until 31 Dec 2027. More details at go.gov.sg/cfhp-info #EnergyEfficiency#ClimateActionSG#SustainableSG
@NEASingapore · Post #1037 · 06.05.2025 г., 02:46
💰𝗖𝗼𝗼𝗹 𝘀𝗮𝘃𝗶𝗻𝗴𝘀 𝗮𝗹𝗲𝗿𝘁! Upgrade to a 5-tick air-conditioner and enjoy about $450 savings in utilities a year compared to a 1-tick model. Take climate action by switching to more energy- and water-efficient appliances with your Climate Vouchers. The Climate Friendly Households Programme now offers an additional $100 in Climate Vouchers, on top of the $300 offered in 2024 for eligible HDB households. The programme has also been expanded to include Singapore Citizen households living in private residential properties in 2025. This means that all eligible HDB and private households have been issued $400 worth of Climate Vouchers. These vouchers are valid until 31 Dec 2027. More details at go.gov.sg/cfhp-info #EnergyEfficiency#ClimateActionSG#SustainableSG
@NEASingapore · Post #1026 · 15.04.2025 г., 02:02
The Climate Friendly Households Programme now offers an additional $100 in Climate Vouchers, on top of the $300 offered in 2024. It has been expanded to include Singapore Citizen households in private residential properties on top of eligible HDB households. Take climate action by switching to more energy- and water-efficient appliances with your Climate Vouchers. The vouchers are valid until 31 Dec 2027. Visit go.gov.sg/climatevouchers for more info. #ClimateActionSG#SustainableSG#EnergyEfficiency
@NEASingapore · Post #28 · 28.03.2020 г., 04:00
It's #EarthHour tonight! Don’t forget to turn off all your lights at 8.30pm today. And because we only have one earth, let’s ensure we use our resources wisely. Read more here: earthhour.org #ClimateActionSG
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@NEASingapore · Post #998 · 18.02.2025 г., 09:18
#SGBudget2025 The enhanced Climate Friendly Households Programme will now cover around 90% of households in Singapore! From 15 Apr 2025, eligible HDB households will receive an additional $100 in Climate Vouchers, on top of the existing $300 offered in 2024. The programme will also be expanded to include Singapore Citizen households living in private residential properties. This means that eligible households staying in HDB and private residential properties can claim a total of $400 worth of Climate Vouchers! These vouchers are valid until 31 Dec 2027. More info at go.gov.sg/nea-cos2025-cv #ClimateActionSG#SustainableSG
@NEASingapore · Post #908 · 26.09.2024 г., 01:00
This year's theme, 'Creating Resilient Communities through Disaster Risk Reduction and Climate Change Mitigation and Adaptation’, highlights the urgent need to build stronger, more adaptable communities in the face of global challenges. By taking climate actions such as practising the 3Rs and adopting energy-saving habits, all of us can play a part in building a more resilient and #SustainableSG🌱💪 #WorldEnvironmentalHealthDay#SustainableSG#ClimateActionSG
@NEASingapore · Post #1077 · 05.07.2025 г., 01:35
Building climate resilience will keep Singapore steady pom pi pi for the next 60 years! 💃🕺 Let’s take action for a #SustainableSG by adopting energy-saving and #ReduceReuseRecycle habits. #SG60#ClimateActionSG