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
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After a successful first season, #Electra launches Squad Games Season 2 — this time with even higher stakes: more prizes, more bonuses, more winners, and more opportunities for active traders!
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🕓 Duration: 2 weeks
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📈Took part in the Storm Trade contest and liked the vibe?
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🤝Squad Games Season 2 by Electra – MORE REWARDS, MORE ACTION!
After a successful first season, #Electra launches Squad Games Season 2 — this time with even higher stakes: more prizes, more bonuses, more winners, and more opportunities for active traders!
📅 Tournament Start: May 26
🕓 Duration: 2 weeks
💵Squad Rewards:
💲 Up to $100,000 USDT
🎁 Up to $100,000 in bonus vouchers
⚡️5,000,000 airdrop points
*Rewards will be distributed among the top 20 traders by volume in each of the top-6 squads.
💵Individual Rewards:
💲 $5,000 USDT will be shared among the top-20 traders with the highest PnL (in USDT) throughout the tournament.
💵 Daily Bonuses — $50 each*:
✅Best PnL of the day
✅Worst PnL of the day
✅Highest daily trading volume
*Rewards are issued as Electra bonus vouchers and will be distributed after the tournament ends.
🤑Just like in Season 1, all trading activity counts toward farming points for the upcoming $ELT airdrop!
So by participating in the tournament, you’re not only competing for real rewards, but also boosting your future $ELT airdrop share.
⚡️ Electra also teased $ELT tokenomics:
• TGE supply — 100,000,000 $ELT
• Up to 10% allocated to the community airdrop
• 5,000,000 $ELT were already distributed in Season 1
• Season 2 has a significantly larger allocation focused on active traders and volume!
📈Took part in the Storm Trade contest and liked the vibe?
Then Squad Games by Electra is your next-level challenge:
✅ Bigger rewards
✅ $ELT farming
✅ Real incentives for your trading activity
🤑 The tournament is live!Join our squad, farm points and claim your share of rewards!
❤️TON Events Squad🧪
#Electra#SquadGames#Season2#Airdrop