from playwright.sync_api import Playwright, sync_playwright, expect def run(playwright: Playwright) -> None: browser = playwright.chromium.launch(headless=False) context = browser.new_context() page = context.new_page() page.goto("http://psamv4athetn.cminl.oa/form/Logon.html?url=http%3A%2F%2Fpinnoplm.cminl.oa%2Freport%2FpartBom%2FbomStructure%2FbomWithMaker&SysID=INNOPLM") page.locator("input[type=\"text\"]").click() page.locator("input[type=\"text\"]").fill("qilong.zou") page.locator("input[type=\"text\"]").press("Tab") page.locator("#tbPassword").fill("pass.007") page.locator("#tbPassword").press("Enter") page.get_by_role("link", name=" Report ").click() page.get_by_role("link", name="Part/BOM ").click() page.get_by_role("link", name="BOM With Maker").click() page.locator("#parentPartNo").click() page.locator("#parentPartNo").press("CapsLock") page.locator("#parentPartNo").fill("6B01M003A300R") page.get_by_role("button", name=" 查詢").click() with page.expect_download() as download_info: page.get_by_role("button", name="").click() download = download_info.value # --------------------- context.close() browser.close() with sync_playwright() as playwright: run(playwright)

这段代码是使用Python编写的，使用了Playwright库中的同步API。它的作用是启动一个Chromium浏览器，并在其中打开一个新的页面，访问指定的URL。其中，headless=False表示浏览器将以非无头模式启动，即可以看到浏览器界面。这段代码的具体功能需要根据访问的URL来确定。

相关问题

python代码playwright库 expect_file_chooser()

`expect_file_chooser()`是Playwright库中的一个函数，用于模拟文件选择器的操作。它可以等待文件选择器弹出，并模拟用户选择文件的操作。

以下是使用`expect_file_chooser()`函数的示例代码：

import asyncio
from playwright.async_api import Playwright, async_playwright

async def file_chooser_example(playwright: Playwright) -> None:
    # Launch the browser
    browser = await playwright.chromium.launch()
    page = await browser.new_page()

    # Navigate to a page with a file input element
    await page.goto("https://www.example.com")

    # Define a coroutine to handle the file chooser dialog
    async def handle_file_chooser(dialog):
        await dialog.set_files("./example.txt")
        await dialog.accept()

    # Listen for the file chooser dialog and handle it
    page.on("filechooser", handle_file_chooser)

    # Click the file input element to trigger the file chooser dialog
    await page.click("#file-input")

    # Wait for the file to be selected and uploaded
    await page.wait_for_selector("#file-uploaded")

    # Close the browser
    await browser.close()

# Run the example
with async_playwright() as playwright:
    asyncio.run(file_chooser_example(playwright))

该示例使用Playwright库启动一个Chromium浏览器实例，并在页面上找到一个文件输入元素。当用户单击该元素时，将弹出文件选择器对话框。`expect_file_chooser()`函数会等待该对话框出现并模拟用户选择文件的操作。然后，该示例会等待文件上传完成并关闭浏览器。

python代码，playwright库 no_wait_after

playwright库中的 `no_wait_after` 选项可以在每个操作之后自动等待，以避免在后续操作中发生意外的行为。如果你想在执行某个操作后不等待，请使用以下代码：

from playwright.sync_api import Playwright, sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    context = browser.new_context()
    page = context.new_page()

    # 在此之后每个操作都会自动等待
    page.click("button")

    # 在此之后不再自动等待
    with page.expect_navigation(url="https://example.com"):
        page.click("a")
        page.wait_for_selector("h1")
    
    # 在此之后重新自动等待
    page.click("button", no_wait_after=True)

    browser.close()

在上面的代码中，我们使用 `no_wait_after` 选项来禁用 `click` 操作之后的自动等待。这意味着我们需要手动等待新页面加载完成并等待新元素出现。在 `with page.expect_navigation()` 代码块中，我们使用 `expect_navigation` 方法来等待新页面的加载，并使用 `wait_for_selector` 方法来等待新页面上的元素加载完成。在这个代码块之后，我们重新启用了 `no_wait_after` 选项，因此后续操作将再次自动等待。