A configuração do google Chrome DevTools (Selenium 4) Usando o WebDriver em Python

0

Pergunta

Estou tentando configurar o uso do Chrome DevTools usando Selenium 4 e Python. Eu tenho sido capaz de fazê-lo executar localmente (sem qualquer assíncrono coisas), mas quando eu tento usar o webdriver.Implementação remota, ele falha.

Aqui está um exemplo de Selênio docs: https://www.selenium.dev/de/documentation/support_packages/chrome_devtools/

Abaixo é como eu tentei executá-lo.

import asyncio

from selenium import webdriver
import selenium.webdriver.common.devtools.v96 as devtools

async def geo_location_test():
    try:
        chrome_options = webdriver.ChromeOptions()
        driver = webdriver.Remote(
            command_executor='http://D5365900:4444/wd/hub',
            options=chrome_options
        )

        async with driver.bidi_connection() as session:
            cdp_session = session.session
            await cdp_session.execute(devtools.emulation.set_geolocation_override(latitude=41.8781,
                                                                                  longitude=-87.6298,
                                                                                  accuracy=100))
        driver.get("https://my-location.org/")
    finally:
        driver.quit()


async def main():
    await geo_location_test()

if __name__ == "__main__":
    asyncio.run(main())

Ele corre até a linha de async with driver.bidi_connection() as session: (sessão é estabelecida e o Chrome, navegador será aberta). Mas a falha com o seguinte rastreamento.

Traceback (most recent call last):
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 54, in <module>
    asyncio.run(main())
  File "C:\Program Files\Python310\lib\asyncio\runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "C:\Program Files\Python310\lib\asyncio\base_events.py", line 641, in run_until_complete
    return future.result()
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 51, in main
    await geo_location_test()
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 40, in geo_location_test
    async with driver.bidi_connection() as session:
  File "C:\Program Files\Python310\lib\contextlib.py", line 199, in __aenter__
    return await anext(self.gen)
  File "C:\Program Files\Python310\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 1576, in bidi_connection
    async with cdp.open_cdp(ws_url) as conn:
  File "C:\Program Files\Python310\lib\contextlib.py", line 199, in __aenter__
    return await anext(self.gen)
  File "C:\Program Files\Python310\lib\site-packages\selenium\webdriver\common\bidi\cdp.py", line 457, in open_cdp
    async with trio.open_nursery() as nursery:
  File "C:\Program Files\Python310\lib\site-packages\trio\_core\_run.py", line 796, in __aenter__
    self._scope.__enter__()
  File "C:\Program Files\Python310\lib\site-packages\trio\_core\_ki.py", line 159, in wrapper
    return fn(*args, **kwargs)
  File "C:\Program Files\Python310\lib\site-packages\trio\_core\_run.py", line 449, in __enter__
    task = _core.current_task()
  File "C:\Program Files\Python310\lib\site-packages\trio\_core\_run.py", line 2285, in current_task
    raise RuntimeError("must be called from async context") from None
RuntimeError: must be called from async context

Como você pode ver, eu estou usando Python 3.10. Eu também atualizou o Selênio ligações para 4.1.0 e estou executando uma Selênio 4.0.0 Hub/Nó de configuração para automatizar o Chrome 96.

Quaisquer ideias, qual é o problema aqui? Estou tratamento assíncrona co-rotinas incorretamente?

Qualquer ajuda é muito apreciada!

Atualização Depois de tentar executá-lo com o trio (como sugerido em Henry Ashton-Martyn do comentário), eu recebo o seguinte erro.

Traceback (most recent call last):
  File "C:\Program Files\Python310\lib\site-packages\trio\_highlevel_open_tcp_stream.py", line 332, in attempt_connect
    await sock.connect(sockaddr)
  File "C:\Program Files\Python310\lib\site-packages\trio\_socket.py", line 682, in connect
    raise OSError(err, "Error in connect: " + os.strerror(err))
OSError: [Errno 10049] Error in connect: Unknown error

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 58, in <module>
    trio.run(main)
  File "C:\Program Files\Python310\lib\site-packages\trio\_core\_run.py", line 1932, in run
    raise runner.main_task_outcome.error
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 55, in main
    await geo_location_test()
  File "C:\Users\y04082\eclipse-workspace\WWI-Testautomation\TestScripts\Josh\async_sel_4.py", line 44, in geo_location_test
    async with driver.bidi_connection() as session:
  File "C:\Program Files\Python310\lib\contextlib.py", line 199, in __aenter__
    return await anext(self.gen)
  File "C:\Program Files\Python310\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 1576, in bidi_connection
    async with cdp.open_cdp(ws_url) as conn:
  File "C:\Program Files\Python310\lib\contextlib.py", line 199, in __aenter__
    return await anext(self.gen)
  File "C:\Program Files\Python310\lib\site-packages\selenium\webdriver\common\bidi\cdp.py", line 458, in open_cdp
    conn = await connect_cdp(nursery, url)
  File "C:\Program Files\Python310\lib\site-packages\selenium\webdriver\common\bidi\cdp.py", line 479, in connect_cdp
    ws = await connect_websocket_url(nursery, url,
  File "C:\Program Files\Python310\lib\site-packages\trio_websocket\_impl.py", line 262, in connect_websocket_url
    return await connect_websocket(nursery, host, port, resource,
  File "C:\Program Files\Python310\lib\site-packages\trio_websocket\_impl.py", line 171, in connect_websocket
    stream = await trio.open_tcp_stream(host, port)
  File "C:\Program Files\Python310\lib\site-packages\trio\_highlevel_open_tcp_stream.py", line 367, in open_tcp_stream
    raise OSError(msg) from trio.MultiError(oserrors)
OSError: all attempts to connect to 0.0.0.0:4444 failed
1

Melhor resposta

0

Parece que o selênio não usa python interno do assíncrona framework, mas usa um pacote chamado trio bem. Você deve ser capaz de corrigir este problema alterando este código:

if __name__ == "__main__":
    asyncio.run(main())

para:

if __name__ == "__main__":
    import trio
    trio.run(main)
2021-12-10 10:43:06

Obrigado pela sugestão. Eu realmente tinha tentado isso antes. Eu atualizei o meu post para mostrar as (diferentes) erro de eu chegar, quando eu tento usar trio.
josh42

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