Using Playwright for Browser Automation: Form Submission, File Upload, Screenshots, Navigation, and Page Title Manipulation in Python

Playwright is a powerful Python library for browser automation, offering a rich API to simulate user interactions like form submission, file upload, screenshot capture, page navigation, and title manipulation.

Form submission and file upload

import asyncio
from playwright.async_api import async_playwright

async def submit_form_and_upload_file(page, url, form_selector, file_path):
    await page.wait_for_selector(form_selector)
    form = await page.querySelector(form_selector)
    await form.fill("username", "admin")
    await form.fill("password", "123456")
    file_input = await form.querySelector("input[type='file']")
    await file_input.set_input_files([file_path])
    await form.submit()

async def main():
    async with async_playwright() as playwright:
        page = await playwright.chromium().new_page()
        await page.goto(url)
        await submit_form_and_upload_file(page, "http://example.com/login", "#login_form", "path/to/file.txt")
        await asyncio.sleep(5000)
        await page.close()

asyncio.run(main())

Screenshot capture

import asyncio
from playwright.async_api import async_playwright

async def save_screenshot(page, screenshot_path):
    await page.waitForLoadState("networkidle")
    screenshot = await page.screenshot()
    with open(screenshot_path, "wb") as file:
        file.write(screenshot)

async def main():
    async with async_playwright() as playwright:
        page = await playwright.chromium().new_page()
        await page.goto("https://example.com")
        await save_screenshot(page, "screenshot.png")
        await page.close()

asyncio.run(main())

Page navigation

import asyncio
from playwright.async_api import async_playwright

async def navigate_to_page(page, url):
    await page.goto(url)

async def main():
    async with async_playwright() as playwright:
        page = await playwright.chromium().new_page()
        target_url = "https://example.com"
        await navigate_to_page(page, target_url)
        await page.close()

asyncio.run(main())

Getting the page title

import asyncio
from playwright.async_api import async_playwright

async def get_page_title(page):
    title = await page.title()
    print("页面标题:", title)

async def main():
    async with async_playwright() as playwright:
        page = await playwright.chromium().new_page()
        await page.goto("https://example.com")
        await get_page_title(page)
        await page.close()

asyncio.run(main())

Setting a new page title

import asyncio
from playwright.async_api import async_playwright

async def set_page_title(page, new_title):
    await page.set_title(new_title)

async def main():
    async with async_playwright() as playwright:
        page = await playwright.chromium().new_page()
        await page.goto("https://example.com")
        new_title = "新的页面标题"
        await set_page_title(page, new_title)
        await asyncio.sleep(2000)
        await page.close()

asyncio.run(main())

Each example shows how to create a Playwright browser instance, perform the desired operation, and close the page, with notes to replace URLs, selectors, and file paths with actual values for real‑world use.