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Изворен канал @pythonotes · Post #381 · 23 окт.
Установить свойства виджета в PySide можно не только через соответствующие методы и конструктор класса. Можно их изменять с помощью метода setProperty по имени. btn = QPushButton("Click Me") btn.setProperty("flat", True) Это аналогично вызову btn.setFlat(True) Если указать несуществующее свойство, то оно просто создается btn.setProperty("btnType", "super") Получить его значение можно методом .property(name) btn_type = btn.property("btnType") Когда это может быть полезно? ▫️Можно просто хранить какие то данные в виджете и потом их доставать обратно widget = QWidget() widget.setProperty('my_data', 123) print(widget.property('my_data')) ▫️ Назначая эти свойства разным виджетам можно потом отличить виджеты во время итераци по ним. Например, найти все кнопки со свойством my_data="superbtn". Но ведь вместо кастомного свойства можно использовать objectName, будет тот же результат. Да, но y ObjectName есть ограничение - только строки. ▫️ Если нам потребуется не просто поиск а, например, сортировка по числу, то свойства позволяют нам это сделать. Поддерживается любой тип данных widget.setProperty('my_data', {'Key': 'value'}) widget.setProperty('order', 1) all_widgets.sort(key=w: w.property('order')) Но ведь Python позволяет всё вышеперечисленное сделать простым созданием атрибута у объекта widget.order = 1 widget.my_data = 123 Да, но я думаю что не надо объяснять почему не стоит так делать. К тому же, если у виджета нет свойства то метод .property(name) вернет None, а отсутствующий атрибут выбросит исключение. ▫️ Действительно полезное применение кастомным свойствам - контроль стилей. Здесь атрибутами не обойтись, нужны именно свойства. Дело в том, что в селекторах стилей можно указывать конкретные свойства виджетов на которые следует назначать стиль. Просто запустите этот код from PySide2.QtWidgets import * if __name__ == "__main__": app = QApplication([]) widget = QWidget(minimumWidth=300) layout = QVBoxLayout(widget) btn1 = QPushButton("Action 1") btn2 = QPushButton("Action 2") btn3 = QPushButton("Action 3", flat=True) layout.addWidget(btn1) layout.addWidget(btn2) layout.addWidget(btn3) # добавим кастомное свойство одной кнопке btn1.setProperty("btnType", "super") # добавляем стили widget.setStyleSheet( """ QPushButton[btnType="super"] { background-color: yellow; color: red; } QPushButton[flat="true"] { color: yellow; } """ ) widget.show() app.exec_() С помощью селектора мы избирательно назначили стили на конкретные кнопки. Как получить список всех кастомный свойств? Функция получения списка кастомных свойств отличается от получения дефолтных. def print_widget_dyn_properties(widget): for prop_name in widget.dynamicPropertyNames(): property_name = prop_name.data().decode() property_value = widget.property(property_name) print(f"{property_name}: {property_value}") #tricks#qt
Пребарај: #robertdurst
@reutersworldchannel · Post #149381 · 14.10.2021 г., 21:40
LIVE: Real estate heir Robert Durst is sentenced for murder conviction A California judge is expected to give a mandatory life prison sentence to multimillionaire real estate heir Robert Durst, 78, who was convicted last month of murdering his best friend Susan Berman in 2000. #Reuters#News#Live#RobertDurst ➖@reutersworldchannel➖
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@reutersworldchannel · Post #149380 · 14.10.2021 г., 21:40
LIVE: Real estate heir Robert Durst is sentenced for murder conviction A California judge is expected to give a mandatory life prison sentence to multimillionaire real estate heir Robert Durst, 78, who was convicted last month of murdering his best friend Susan Berman in 2000. #Reuters#News#Live#RobertDurst ➖@reutersworldchannel➖
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@reutersworldchannel · Post #149379 · 14.10.2021 г., 21:40
LIVE: Real estate heir Robert Durst is sentenced for murder conviction A California judge is expected to give a mandatory life prison sentence to multimillionaire real estate heir Robert Durst, 78, who was convicted last month of murdering his best friend Susan Berman in 2000. #Reuters#News#Live#RobertDurst ➖@reutersworldchannel➖
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@reutersworldchannel · Post #149375 · 14.10.2021 г., 21:08
LIVE: Real estate heir Robert Durst is sentenced for murder conviction A California judge is expected to give a mandatory life prison sentence to multimillionaire real estate heir Robert Durst, 78, who was convicted last month of murdering his best friend Susan Berman in 2000. #Reuters#News#Live#RobertDurst ➖@reutersworldchannel➖
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@reutersworldchannel · Post #149390 · 15.10.2021 г., 02:21
Real estate heir Robert Durst sentenced to life for murder A California judge sentenced real estate heir Robert Durst to life in prison without the possibility of parole for murdering his best friend Susan Berman in 2000, in a long-delayed punishment for a man who mostly evaded the law over 39 years. #RobertDurst#SusanBerman#TheJinx#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149383 · 15.10.2021 г., 00:28
Judge sentences Robert Durst to life for California murder A California judge imposed a life prison sentence without the possibility of parole on multimillionaire real estate heir Robert Durst, who was convicted last month of murdering his best friend Susan Berman in 2000. #RobertDurst#SusanBerman#TheJinx#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149508 · 18.10.2021 г., 12:50
October 18, 2021: U.S missionaries, China economy, Robert Durst, India floods, California oil spill October 18, 2021: U.S missionaries, China economy, Robert Durst, India floods, California oil spill 1. A U.S. Christian aid organization said a group of its missionaries had been kidnapped in Haiti, a further sign the Caribbean nation's gangs are growing increasingly brazen amid political and economic crises. 2. China’s economy hit its slowest pace of growth in a year in the third quarter, hurt by power shortages and wobbles in the property sector, highlighting the challenge facing policymakers as they seek to prop up a faltering recovery while reining in the real estate sector. 3. Leaders in the south Indian state of Kerala opened near-overflowing dams on Monday, after at least 22 people died when heavy rains lashed the state over the weekend. 4. Real estate heir Robert Durst, who was sentenced this week to life in prison for murdering a friend in 2000, has COVID and is on a ventilator, his lawyer told the Los Angeles Times. 5. The U.S. Coast Guard boarded a container ship in the Port of Long Beach that dragged its anchor close to a subsea pipeline found to be the source of an oil spill off Orange County, California, it said in a press release. #Haiti #US #Missionaries #China #Economy #RobertDurst #India #floods #Kerala #California #OilSpill #Caribbean #News #Reuters #MorningNews #Headlines Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖