导航到“url”，等到“加载”-python playright 问题

Question

嘿，我在 python playwright 中有用于获取页面源的代码：

import json
import sys
import bs4
import urllib.parse
from bs4 import BeautifulSoup
server_proxy = urllib.parse.unquote(sys.argv[1])
link = urllib.parse.unquote(sys.argv[2])
from playwright.sync_api import sync_playwright
with sync_playwright() as p:
    #browser = p.chromium.launch(headless = False)
    browser = p.chromium.launch(proxy={"server": server_proxy,'username': 'xxx',"password": 'xxx' })
    context = browser.new_context(user_agent='Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36')
    page = context.new_page()
    cookie_file = open('cookies_tessco.json')
    cookies = json.load(cookie_file)
    context.add_cookies(cookies)
    page.goto(link)
    try:
        page.wait_for_timeout(10000)
        cont = page.content()
        print(cont)
        page.close()
        context.close()
        browser.close()      
    except Exception as e:
        print("Error in playwright script." + page)
        page.close()
        context.close()
        browser.close()      

这工作正常，但有时我会收到此错误：

Traceback (most recent call last):
  File "page_tessco.py", line 17, in <module>
    page.goto(link)
  File "/usr/local/lib/python3.9/site-packages/playwright/sync_api/_generated.py", line 5774, in goto
    self._sync(
  File "/usr/local/lib/python3.9/site-packages/playwright/_impl/_sync_base.py", line 103, in _sync
    return task.result()
  File "/usr/local/lib/python3.9/site-packages/playwright/_impl/_page.py", line 464, in goto
    return await self._main_frame.goto(**locals_to_params(locals()))
  File "/usr/local/lib/python3.9/site-packages/playwright/_impl/_frame.py", line 117, in goto
    await self._channel.send("goto", locals_to_params(locals()))
  File "/usr/local/lib/python3.9/site-packages/playwright/_impl/_connection.py", line 36, in send
    return await self.inner_send(method, params, False)
  File "/usr/local/lib/python3.9/site-packages/playwright/_impl/_connection.py", line 47, in inner_send
    result = await callback.future
playwright._impl._api_types.TimeoutError: Timeout 30000ms exceeded.
=========================== logs ===========================
navigating to "https://www.tessco.com/product/207882", waiting until "load"

我尝试添加

page.wait_for_timeout(10000)

但是，这些错误有时会出现，任何帮助，我也很困惑为什么这个错误只是有时出现，是什么导致这个错误，如果有人有经验请分享一下？

Answer 1

https://www.tessco.com/product/207882 加载速度慢。尝试延长30000ms的默认超时时间，为page.goto(link)添加超时时间：

page.goto(link, timeout = 0)

将timeout 设置为0 可以禁用超时。 Documentation

或者，您可以通过以下方式禁用超时：

page.set_default_timeout(0)
page.goto(link)