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playwright支持基于Chromium内核的Google Chrome 和 Microsoft Edge浏览器, WebKit内核的Apple Safari 和 Mozilla Firefox浏览器，可以对浏览器的语言进行设置，可用来测试产品的语言自适应功能。
playwright设置浏览器语言比selenium更简洁，创建浏览器上下文时设置一下
locale
参数：
browser.new_context(locale="zh-CN")chrome浏览器语言设置示例：
from playwright.sync_api import sync_playwright
classTestBrowser():defsetup(self):
self.playwright = sync_playwright().start()defteardown(self):
self.browser.close()deftest_chrome(self):
self.browser = self.playwright.chromium.launch(channel="chrome", headless=False)
context = self.browser.new_context(locale="zh-CN")# zh-CN、en-GB
page = context.new_page()
page.goto("")
lan = page.evaluate("window.navigator.language;")print(lan)assert lan =="zh-CN"Edge，WebKit，Firefox浏览器类似：
deftest_edge(self):
self.browser = self.playwright.chromium.launch(channel="msedge", headless=False)
context = self.browser.new_context(locale="de-DE")
page = context.new_page()
page.goto("")
lan = page.evaluate("window.navigator.language;")print(lan)assert lan =="de-DE"deftest_firefox(self):
self.browser = self.playwright.firefox.launch(headless=False)
context = self.browser.new_context(locale="de-DE")
page = context.new_page()
page.goto("")
lan = page.evaluate("window.navigator.language;")print(lan)assert lan =="de-DE"deftest_webkit(self):
self.browser = self.playwright.webkit.launch(headless=False)
context = self.browser.new_context(locale="de-DE")
page = context.new_page()
page.goto("")
lan = page.evaluate("window.navigator.language;")print(lan)assert lan =="de-DE"上面是同步版本，也可以写成异步方式：
import asyncio
import time
from playwright.async_api import async_playwright
asyncdeftest_chrome():print('test_chrome start')asyncwith async_playwright()as p:
browser =await p.chromium.launch(headless=False)
context =await browser.new_context(locale="en-US")# zh-CN、en-GB
page =await context.new_page()await page.goto("")
lan =await page.evaluate("window.navigator.language;")assert lan =="en-US"await browser.close()print('test_chrome done')asyncdeftest_edge():print('test_edge start')asyncwith async_playwright()as p:
browser =await p.chromium.launch(channel="msedge", headless=False)
context =await browser.new_context(locale="en-US")# zh-CN、en-GB
page =await context.new_page()await page.goto("")
lan =await page.evaluate("window.navigator.language;")assert lan =="en-US"await browser.close()print('test_edge done')asyncdeftest_firefox():print('test_firefox start')asyncwith async_playwright()as p:
browser =await p.firefox.launch(headless=False)
context =await browser.new_context(locale="en-US")# zh-CN、en-GB
page =await context.new_page()await page.goto("")
lan =await page.evaluate("window.navigator.language;")assert lan =="en-US"await browser.close()print('test_firefox done')asyncdeftest_webkit():print('test_webkit start')asyncwith async_playwright()as p:
browser =await p.webkit.launch(headless=False)
context =await browser.new_context(locale="en-US")# zh-CN、en-GB
page =await context.new_page()await page.goto("")
lan =await page.evaluate("window.navigator.language;")assert lan =="en-US"await browser.close()print('test_webkit done')asyncdefmain():
task1 = asyncio.create_task(test_chrome())
task2 = asyncio.create_task(test_edge())
task3 = asyncio.create_task(test_firefox())
task4 = asyncio.create_task(test_webkit())
tasks =[task1, task2, task3, task4]print('before await')await asyncio.gather(*tasks)
start = time.time()
asyncio.run(main())
end = time.time()print('Running time: %s Seconds'%(end - start))执行结果：
before await
test_chrome start
test_edge start
test_firefox start
test_webkit start
test_chrome done
test_edge done
test_webkit done
test_firefox done
Running time:17.376961946487427 Seconds
不同国家的语言代码可参考：
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