TGINSIGHT SIMILAR POSTS
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: #systemd
@linuxgram · Post #18227 · 28.03.2026 г., 22:17
📰 KaOS 2026.03 Released With Major Move Away From systemd Components KaOS 2026.03 removes systemd-boot and mkinitcpio, adopts Limine and Dracut, and introduces a new Niri-based desktop environment. 🔗 Source: https://linuxiac.com/kaos-2026-03-released-with-major-move-away-from-systemd-components/ #systemd
Hashtags
@linuxgram · Post #18156 · 23.03.2026 г., 16:48
📰Someone Forked Systemd to Strip Out Its Age Verification Support The project removes the birthDate field systemd added last week in response to age verification laws. 🔗 Source: https://feed.itsfoss.com/link/24361/17304579/systemd-fork-strips-out-age-verification #systemd
Hashtags
@linuxgram · Post #18134 · 21.03.2026 г., 15:10
📰 SysV Init 3.16 Released With Cleanups, Improved systemd Unit To SysV Script Conversion For any holdouts still running SysV Init instead of systemd or other alternatives like OpenRC, SysV Init 3.16 is out as the first release in a half-year and bringing a few refinements... 🔗 Source: https://www.phoronix.com/news/SysV-Init-3.16 #systemd
Hashtags
@linuxgram · Post #17898 · 25.02.2026 г., 22:10
📰 systemd 260-rc1 Released: New "mstack" Feature, System V Service Scripts No Longer Supported The first release candidate of systemd 260 is now available for testing. Systemd 260 finally does away with System V service scripts support. Also notable to systemd 260 is the work around the new "mstack" feature... 🔗 Source: https://www.phoronix.com/news/systemd-260-rc1 #systemd
Hashtags
@libreware · Post #1572 · 05.04.2026 г., 19:22
systemd birthDate Merge: Corporate Filings & Governance Failure Investigation pulled Amutable's founding documents from the German Handelsregister The corporate filings show three equal shareholders, no outside investors, and self-dealing exemptions that let any founder sign contracts between the company and their own personal entities All three founders were employed at Microsoft when they signed the founding deed. A hidden shareholders' agreement referenced three times in the Articles of Association but never filed publicly governs economic rights, IP assignment, and vesting terms the public cannot see. Three decisions put the birthDate field into #systemd. Each was made by someone with a direct financial interest in the outcome No one disclosed those interests. systemd has no conflict-of-interest policy, no steering committee, no community veto, and no disclosure requirements. The project that boots every major Linux distribution has less formal governance than a typical mid-size open source project.
Hashtags
@libreware · Post #1405 · 08.02.2025 г., 00:45
Lennart Poettering intends to replace "sudo" with #systemd's run0. Here's a quick PoC to demonstrate root permission hijacking by exploiting the fact "systemd-run" (the basis of uid0/run0, the sudo replacer) creates a user owned pty for communication with the new "root" process. This isn't the only bug of course, it's not possible on Linux to read the environment of a root owned process but as systemd creates a service in the system slice, you can query D-BUS and learn sensitive information passed to the process env, such as API keys or other secrets. https://fixupx.com/hackerfantastic/status/1785495587514638559 Nitter mirror: https://xcancel.com/hackerfantastic/status/1785495587514638559
Hashtags
@linuxgram · Post #18251 · 31.03.2026 г., 06:54
📰 The One Trick That Made Immutable Linux Easier For Me There's a systemd utility that lets you "inject" tools into a read-only OS at runtime, without rebooting the system. Here's my exploration. 🔗 Source: https://feed.itsfoss.com/link/24361/17309280/systemd-sysext #linux#systemd
@linuxgram · Post #18220 · 28.03.2026 г., 11:00
📰 Fish 4.6 Shell Brings Support For Recent systemd Environment Variables Fish 4.6 released today as the newest version of this Rust-based interactive shell for Linux and other platforms... 🔗 Source: https://www.phoronix.com/news/Fish-4.6-Released #systemd#linux
@linuxgram · Post #18122 · 20.03.2026 г., 11:14
📰Systemd Introduces Birth Date Support for Upcoming Linux Desktop Age Controls A recent systemd update introduces birth date storage, supporting ongoing efforts to implement age-based access controls in the Linux desktop stack. 🔗 Source: https://linuxiac.com/systemd-introduces-birth-date-support-for-upcoming-linux-desktop-age-controls/ #linux#systemd
@linuxgram · Post #17971 · 04.03.2026 г., 19:51
📰 systemd 260-rc2 Released With More Changes Last week marked the release of systemd 260-rc1 with a new "mstack" feature, a new "FANCY_NAME" field for os-release, dropping System V service script support, and other changes. Out today is systemd 260-rc2 release with more changes in further working its way toward a stable release for empowering 2026 Linux distributions... 🔗 Source: https://www.phoronix.com/news/systemd-260-rc2 #systemd#linux
@linuxgram · Post #17940 · 02.03.2026 г., 04:16
📰 New to Linux? These 4 systemd Tools Help You Fix Common Issues Stop guessing, start investigating. Here are 4 systemd tools that make Linux troubleshooting easy. 🔗 Source: https://itsfoss.com/systemd-troubleshoot-tools/ #linux#systemd
@linuxgram · Post #18192 · 26.03.2026 г., 10:43
📰 Inside the Systemd Age Verification Debate: Developer Responds to Criticism A single pull request turned a quiet open source contributor into the unlikely target of one of the Linux community's most heated controversies. We interacted with Dylan Taylor to hear his side of the story. 🔗 Source: https://feed.itsfoss.com/link/24361/17306445/dylan-taylor-systemd-controversy #systemd#linux#opensource
Hashtags