使用Playwright在Firefox中打开多标签页异常：弹出多窗口

问题原因 #

Firefox中，每个Playwright的BrowserContext对应一个独立的浏览器窗口，你之前的代码通过context.new_page()创建页面时，Firefox会为该上下文单独启动窗口；而Chrome允许同一上下文的页面共享同一窗口的标签页，因此表现存在差异。

解决方案一：直接通过Browser实例创建页面 #

移除BrowserContext的创建步骤，直接调用browser.new_page()，Firefox会在同一个窗口中打开新标签页：

import time
from playwright.sync_api import sync_playwright

def run(playwright):
    firefox = playwright.firefox
    browser = firefox.launch(headless=False)
    page = browser.new_page()
    page.goto("https://google.com")
    new_tab = browser.new_page()
    new_tab.goto("https://playwright.dev")
    time.sleep(5)
    browser.close()

with sync_playwright() as playwright:
    run(playwright)

解决方案二：复用Context并配置Firefox启动参数 #

如果需要保留BrowserContext（用于共享Cookie、本地存储等），可以在启动Firefox时添加-new-tab参数，强制在同一窗口打开新标签：

import time
from playwright.sync_api import sync_playwright

def run(playwright):
    firefox = playwright.firefox
    browser = firefox.launch(headless=False, args=["-new-tab"])
    context = browser.new_context()
    page = context.new_page()
    page.goto("https://google.com")
    new_tab = context.new_page()
    new_tab.goto("https://playwright.dev")
    time.sleep(5)
    browser.close()

with sync_playwright() as playwright:
    run(playwright)

内容的提问来源于stack exchange，提问作者Raisul Islam