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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

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@venturevillagewall · Post #4126 · 11.02.2025 г., 22:00

BitGo Considers IPO in 2025 Crypto custodian BitGo Inc. is exploring an IPO, potentially listing in H2 2025 amid positive regulatory climate. The company raised $100 million in 2023, increasing its valuation to $1.75 billion. This move aligns with growing institutional interest in crypto. Read more: Bloomberg #Crypto#IPO#BitGo#Blockchain#Investment#MSTR#Profit#Custody#Regulation#Market#Financial#Valuation#Institutional#Assets#Saylor#Trading#News#Tech#Finance#VC

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@venturevillagewall · Post #4078 · 05.02.2025 г., 22:00

Massive Crypto Transfers and Bitcoin News 🚨 A staggering 50 billion #HEX ($104 million) moved between unknown wallets. Read more on Whale Alert. ⏳ On another note, Utah will become the first U.S. state to create a Bitcoin Reserve, investing up to 5% of state funds in $BTC and altcoins, potentially setting a precedent nationwide. 📊 Bitcoin's annual volatility is at an all-time low, with superior risk-adjusted returns compared to major asset classes as reported by ARK Invest. Meanwhile, the total Stablecoin supply on Base has surpassed $4B (source). Plus, banks are lobbying for crypto custody opportunities, while over 5,100 #BTC ($497 million) was transferred from #Kraken to an unknown wallet. Ark Invest also confirms Bitcoin's trajectory toward its 2030 price targets. 🌐 #HEX#Bitcoin#BTC#Kraken#Stablecoin#Crypto#Finance#Investments#ARKInvest#DeFi#Utah#Volatility#PriceTargets#WhaleAlert#Custody#CryptoAssets#Onchain#Investing#MarketTrends#Ethereum

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@venturevillagewall · Post #4335 · 08.03.2025 г., 01:00

Coinbase Expands Listings Amid Positive Crypto News Coinbase adds Aethir (ATH) and Syrup (SYRUP) to listing roadmap. Aethir is a decentralized yield aggregator; Syrup enhances institutional digital asset lending. In related news, Gemini, the crypto firm of the Winklevoss twins, confidentially files for IPO with Goldman Sachs, Citigroup support; public offering may happen this year. Additionally, the top US banking regulator rescinds digital asset restrictions, allowing banks to engage in crypto custody and stablecoin activities. Trump's administration pursuing strategies to increase U.S. Bitcoin reserves. #Coinbase#Aethir#Syrup#Gemini#IPO#Winklevoss#Crypto#Bitcoin#Finance#Regulation#US#Banking#Custody#Stablecoins#DigitalAssets#DeFi#VC#Trump#CryptoNews#MarketUpdates

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@venturevillagewall · Post #4153 · 14.02.2025 г., 19:00

Citi Eyes Crypto Custody Expansion Citi is considering the addition of crypto custody services, indicating a growing interest in the digital asset space. Meanwhile, 60,045,505 #XRP, valued at 163,660,947 USD, was recently transferred between unknown wallets, according to Whale Alert. Read more: BBG #Citi#Crypto#XRP#Custody#WhaleAlert#Finance#DigitalAssets#Banking#Investment#Assets#Blockchain#Wallets#Market#News#Updates#FinanceNews#FinanceTech#WealthManagement#CustodyServices#DigitalCurrency

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@venturevillagewall · Post #4187 · 19.02.2025 г., 04:00

Crypto-Friendly Lutnick Confirmed as Commerce Secretary The US Senate has confirmed Howard Lutnick as Secretary of Commerce, known for his pro-crypto stance. In related news, State Street and Citi, two major banks, are both entering the cryptocurrency custody business, with State Street planning to launch services next year. State Street manages $46.6 trillion while Citi holds $25 trillion in custody assets. Read more here and further details on custody here. #Crypto#Commerce#Banking#Custody#HowardLutnick#StateStreet#Citi#Finance#Assets#Investment#DigitalAssets#BitCoin#CustodianServices#Blockchain#Senate#Regulation#USPolitics#Cryptocurrency#Innovation#CryptoNews

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@venturevillagewall · Post #3835 · 10.01.2025 г., 04:00

Russia to Sell Seized Bitcoin Assets The Russian Ministry of Finance plans to sell seized Bitcoin assets from the Infraud hacking case, starting with a batch valued at approximately $10 million. Marat Tambiev, a corrupt official, previously obtained 1,032.1 BTC from the hacker group. Read more here. #Bitcoin#Russia#Infraud#Crypto#DigitalAssets#Banking#Finance#Regulation#MiCA#Custody#StandardChartered#EU#Hacking#Seizure#MaratTambiev#CryptoNews#BTC#Blockchain#FinanceNews#News

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@venturevillagewall · Post #4192 · 19.02.2025 г., 16:00

Hong Kong Targets Global Virtual Asset Hub Hong Kong unveils new roadmap to become a global virtual asset center, focusing on staking services, attracting liquidity, and exploring derivatives trading. Further endeavors include OTC and custody licensing. For details, visit Wu Blockchain News. #HongKong#VirtualAssets#Crypto#DeFi#Liquidity#Licensing#Staking#Derivatives#OTC#Custody#Regulation#Finance#Investment#Blockchain#Web3#MarketTrends#TechUpdates#Innovation#GlobalMarkets#FutureOfFinance