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Showing content from https://playwright.dev/python/docs/api/class-dialog below:

Dialog | Playwright Python

Dialog

Dialog objects are dispatched by page via the page.on("dialog") event.

An example of using Dialog class:

Sync
Async

from playwright.sync_api import sync_playwright, Playwright

def handle_dialog(dialog):
    print(dialog.message)
    dialog.dismiss()

def run(playwright: Playwright):
    chromium = playwright.chromium
    browser = chromium.launch()
    page = browser.new_page()
    page.on("dialog", handle_dialog)
    page.evaluate("alert('1')")
    browser.close()

with sync_playwright() as playwright:
    run(playwright)

import asyncio
from playwright.async_api import async_playwright, Playwright

async def handle_dialog(dialog):
    print(dialog.message)
    await dialog.dismiss()

async def run(playwright: Playwright):
    chromium = playwright.chromium
    browser = await chromium.launch()
    page = await browser.new_page()
    page.on("dialog", handle_dialog)
    page.evaluate("alert('1')")
    await browser.close()

async def main():
    async with async_playwright() as playwright:
        await run(playwright)
asyncio.run(main())

note

Dialogs are dismissed automatically, unless there is a page.on("dialog") listener. When listener is present, it must either dialog.accept() or dialog.dismiss() the dialog - otherwise the page will freeze waiting for the dialog, and actions like click will never finish.

Methods acceptAdded before v1.9 dialog.accept

Returns when the dialog has been accepted.

Usage