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How to use greenlet_main method in Playwright Python

Best Python code snippet using playwright-python

test_greenlet.py

Source:test_greenlet.py

...506        # This has to be an instance variable because507        # Python 2 raises a SyntaxError if we delete a local508        # variable referenced in an inner scope.509        self.glets = [] # pylint:disable=attribute-defined-outside-init510        def greenlet_main():511            try:512                getcurrent().parent.switch()513            except GreenletExit:514                self.glets.append(getcurrent())515        # Before the516        for _ in range(10):517            Greenlet(greenlet_main).switch()518        del self.glets519        self.assertEqual(sys.getrefcount(Greenlet), initial_refs)520    def test_issue_245_reference_counting_subclass_threads(self):521        # https://github.com/python-greenlet/greenlet/issues/245522        from threading import Thread523        from threading import Event524        from greenlet import getcurrent525        class MyGreenlet(greenlet):526            pass527        glets = []528        ref_cleared = Event()529        def greenlet_main():530            getcurrent().parent.switch()531        def thread_main(greenlet_running_event):532            mine = MyGreenlet(greenlet_main)533            glets.append(mine)534            # The greenlets being deleted must be active535            mine.switch()536            # Don't keep any reference to it in this thread537            del mine538            # Let main know we published our greenlet.539            greenlet_running_event.set()540            # Wait for main to let us know the references are541            # gone and the greenlet objects no longer reachable542            ref_cleared.wait()543            # The creating thread must call getcurrent() (or a few other...

greenlet_utils.py

Source:greenlet_utils.py

...24    never in other greenlets unless someone  explicitely calls25    `kill(KeyboardInterrupt)`. Apart from the later case, `KillMask`26    does not delay `KeyboardInterrupt`.27    A typical use case of `KillMask` is this:28        def greenlet_main():29            <setup>30            try:31                <body>32            finally:33                with KillMask(masked_kill_nb=1):34                    <cleanup>35    We assume this code does not run in the main greenlet. Whenever36    you use a cooperative call, you could receive an exception in37    `greenlet_main` originating from a `kill` on the executing greenlet.38    The default exception is `GreenletExit` which is a `BaseException`.39    In the exception could occur in three locations (assuming they40    all use cooperative calls):41        1. exception in <setup>: <cleanup> is not called42        2. exception in <body>: <cleanup> is called thanks to try-finally...

sync_playwright_remote.py

Source:sync_playwright_remote.py

...36            raise Error(37                """It looks like you are using Playwright Sync API inside the asyncio loop.38Please use the Async API instead."""39            )40        def greenlet_main() -> None:41            loop.run_until_complete(self._connection.run_as_sync())42            if own_loop:43                loop.run_until_complete(loop.shutdown_asyncgens())44                loop.close()45        dispatcher_fiber = greenlet(greenlet_main)46        self._connection = self._make_connection(47            dispatcher_fiber,48            create_remote_object,49            WebSocketTransport(loop, self._ws_endpoint),50            loop)51        g_self = greenlet.getcurrent()52        def callback_wrapper(playwright_impl: Playwright) -> None:53            self._playwright = SyncPlaywright(playwright_impl)54            g_self.switch()...

_context_manager.py

Source:_context_manager.py

...36            raise Error(37                """It looks like you are using Playwright Sync API inside the asyncio loop.38Please use the Async API instead."""39            )40        def greenlet_main() -> None:41            loop.run_until_complete(self._connection.run_as_sync())42            if own_loop:43                loop.run_until_complete(loop.shutdown_asyncgens())44                loop.close()45        dispatcher_fiber = greenlet(greenlet_main)46        self._connection = Connection(47            dispatcher_fiber,48            create_remote_object,49            PipeTransport(loop, compute_driver_executable()),50            loop,51        )52        g_self = greenlet.getcurrent()53        def callback_wrapper(playwright_impl: Playwright) -> None:54            self._playwright = SyncPlaywright(playwright_impl)...

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
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What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
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Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.