TestMu 2025 - The Largest Virtual Software Testing Conference is Back | 50,000+ Attendees

How to use test_jshandle_properties_get_property method in Playwright Python

Best Python code snippet using playwright-python

test_jshandle.py

...78        }""",79        {"foo": 42},80    )81    assert result == {}82async def test_jshandle_properties_get_property(page):83    handle1 = await page.evaluate_handle(84        """() => ({85            one: 1,86            two: 2,87            three: 388        })"""89    )90    handle2 = await handle1.get_property("two")91    assert await handle2.json_value() == 292async def test_jshandle_properties_work_with_undefined_null_and_empty(page):93    handle = await page.evaluate_handle(94        """() => ({95            undefined: undefined,96            null: null,...

StackOverFlow community discussions

Questions

Discussion

Is there a way to return response body in Playwright?

Scrapy playwright scrolldown and wait to load the html

python playwright - issues with typing inside the input fields

Install playwright from a local directory

Can Playwright be used to launch a browser instance

Playwright auto-scroll to bottom of infinite-scroll page

How to pass a variable out of a lambda

Using playwright for Python, how do I wait for two different selectors/handles at the same time and take the first successful match?

Using Playwright for Python, how do I select (or find) an element?

python playwright - issue with adding cookies from file

Just use some condition instead of print method, for example you could check if response contains some key in its json:

def run(playwright):
    chromium = playwright.chromium
    browser = chromium.launch()
    page = browser.new_page()
    # Subscribe to "request" and "response" events.
    page.on("request", lambda request: print(">>", request.method, request.url))
    page.on("response", lambda response: print("<<", response.status, response.url))
    page.goto("https://example.com")
    browser.close()

For Example:

page.on("response", lambda response: response if key in response.body())

There should be waitForResponse for python too, and you could use that.

https://stackoverflow.com/questions/71119462/is-there-a-way-to-return-response-body-in-playwright

The following is one way to get the images on that page - apparently only 398, not 600+ - it's even specified in the top breadcrumb - Trail Running Shoes(398)). Solution is based on Selenium, you're welcome to functionalize it, OOP it, whatever, I'm only giving you the actual method of obtaining the images.

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.keys import Keys
import time as t

chrome_options = Options()
chrome_options.add_argument("--no-sandbox")
chrome_options.add_argument('disable-notifications')
chrome_options.add_argument("--headless")
chrome_options.add_argument("window-size=1280,1080")

webdriver_service = Service("chromedriver/chromedriver") ## path to where you saved chromedriver binary
browser = webdriver.Chrome(service=webdriver_service, options=chrome_options)
wait = WebDriverWait(browser, 20)
actions = ActionChains(browser)


url = 'https://www.tradeinn.com/runnerinn/en/mens-shoes-trail-running-shoes/10005/s#fq=id_familia=10002&sort=v30_sum;desc@tm10;asc&fe=&pf=id_subfamilia=10005@&start=0'
browser.get(url)
pbody = wait.until(EC.presence_of_element_located((By.TAG_NAME, 'body')))
for x in range(14):
    pbody.send_keys(Keys.PAGE_DOWN)
    print('scrolled')
    t.sleep(1)
t.sleep(5)
images = wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, 'img[class="imagen_buscador"]')))
print(len(images))
for i in images:
    print(i.get_attribute('src'))

Result in terminal:

scrolled
scrolled
scrolled
[...]
398
https://www.tradeinn.com/h/13855/138556150/nike-juniper-trail-running-shoes.jpg
https://www.tradeinn.com/h/13855/138552239/nike-react-pegasus-4-trail-running-shoes.jpg
https://www.tradeinn.com/h/13727/137276760/merrell-vapor-glove-3-shoes.jpg
https://www.tradeinn.com/h/13842/138429239/adidas-terrex-agravic-flow-2-goretex-trail-running-shoes.jpg
https://www.tradeinn.com/h/13855/138556425/nike-wildhorse-7-trail-running-shoes.jpg
https://www.tradeinn.com/h/13842/138429416/adidas-terrex-two-goretex-trail-running-shoes.jpg
https://www.tradeinn.com/h/13842/138429408/adidas-terrex-two-boa-trail-running-shoes.jpg
https://www.tradeinn.com/h/13855/138556423/nike-wildhorse-7-trail-running-shoes.jpg
https://www.tradeinn.com/h/13857/138574338/new-balance-410v7-all-terrain-trail-running-shoes.jpg
https://www.tradeinn.com/h/13857/138574792/new-balance-fresh-foam-x-hierro-v7-trail-running-shoes.jpg
https://www.tradeinn.com/h/13857/138574340/new-balance-410v7-all-terrain-trail-running-shoes.jpg
https://www.tradeinn.com/h/13789/137892027/adidas-terrex-two-boa-trail-running-shoes.jpg
https://www.tradeinn.com/h/13727/137276761/merrell-vapor-glove-3-shoes.jpg
https://www.tradeinn.com/h/13836/138368054/joma-trek-trail-running-shoes.jpg
https://www.tradeinn.com/h/13710/137107634/vibram-fivefingers-v-trail-2.0-trail-running-shoes.jpg
https://www.tradeinn.com/h/13789/137891690/adidas-terrex-agravic-flow-trail-running-shoes.jpg
https://www.tradeinn.com/h/13789/137892315/adidas-terrex-swift-r3-trail-running-shoes.jpg
https://www.tradeinn.com/h/13855/138552241/nike-react-pegasus-4-trail-running-shoes.jpg
https://www.tradeinn.com/h/13803/138030718/nike-wildhorse-7-trail-running-shoes.jpg
[..]

For Selenium docs, see https://www.selenium.dev/documentation/

https://stackoverflow.com/questions/73799005/scrapy-playwright-scrolldown-and-wait-to-load-the-html

user and myInput are IDs on the input element itself and not on one of the parent elements. This means, that using a selector like this works in your scenario:

    page.type('input[name="email"]#user', "xxxxx")
    page.type('input[name="password"]#myInput', "xxxxxxxxxxxx")

The reason why it hangs is that it can't find the element. I would recommend to follow the Playwright debugging tools section to either use DEBUG=pw:api or the PWDEBUG=1 to get debug logs why its hanging - in your case it would tell you that the selector cannot be found.

https://stackoverflow.com/questions/68128377/python-playwright-issues-with-typing-inside-the-input-fields

So I found a working solution.

What I did was to combine Javascript with python Playwright code.

I start the setInterval with a timer of 200ms to scroll down on the page with page.evaluate() and then I follow it up with a python loop that checks every second whether the total height of the page (scroll included) has changed. If it changes it continues to scroll and if it hasn't changed than the scroll is over.
This is what it looks like:

page.evaluate(
    """
    var intervalID = setInterval(function () {
        var scrollingElement = (document.scrollingElement || document.body);
        scrollingElement.scrollTop = scrollingElement.scrollHeight;
    }, 200);

    """
)
prev_height = None
while True:
    curr_height = page.evaluate('(window.innerHeight + window.scrollY)')
    if not prev_height:
        prev_height = curr_height
        time.sleep(1)
    elif prev_height == curr_height:
        page.evaluate('clearInterval(intervalID)')
        break
    else:
        prev_height = curr_height
        time.sleep(1)

EDIT

See the below answer using the new mouse.wheel(x, y) feature for an up to date way to scroll using playwright. Combine my answer with his to lessen the need to use JS.

https://stackoverflow.com/questions/69183922/playwright-auto-scroll-to-bottom-of-infinite-scroll-page

Functions assigned to events (in any module) can't return value and you may need to use global variable for this. But lambda can't use global and can't assign value to variable so it needs normal function

url = ""

def on_response(response):
    global url  # inform functio to use external variable (instead of local variable) when you use `=` to assign value
    
    if ".m3u8" in response.url:
        url = response.url

page.on("response", on_response)

https://stackoverflow.com/questions/70111070/how-to-pass-a-variable-out-of-a-lambda

You can pass both selectors separated by a comma. Ref.

new_selector = "text=Your are a winner, text=Better luck next time"
handle = query_selector(new_selector)

https://stackoverflow.com/questions/72095327/using-playwright-for-python-how-do-i-wait-for-two-different-selectors-handles-a

The accepted answer does not work with the newer versions of Playwright. (Thanks @576i for pointing this out)

Here is the Python code that works with the newer versions (tested with version 1.5):

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()
    page.goto('http://whatsmyuseragent.org/')
    ua = page.query_selector(".user-agent");
    print(ua.inner_html())
    browser.close()

To get only the text, use the inner_text() function.

print(ua.inner_text())

https://stackoverflow.com/questions/64303326/using-playwright-for-python-how-do-i-select-or-find-an-element

Blogs

Check out the latest blogs from LambdaTest on this topic:

Introducing The LambdaTest VS Code Extension

A productive workspace is crucial in crafting code rather than just finding the right IDE. After several generations of IDEs and code editors, Visual Studio Code is considered one of the best web development IDEs used by developers.

Getting Started With Automation Testing Using Selenium Ruby

Ruby is a programming language which is well suitable for web automation. Ruby makes an excellent choice because of its clean syntax, focus on built-in library integrations, and an active community. Another benefit of Ruby is that it also allows other programming languages like Java, Python, etc. to be used in order to automate applications written in any other frameworks. Therefore you can use Selenium Ruby to automate any sort of application in your system and test the results in any type of testing environment

Playwright Python Tutorial: Getting Started With Python End To End Testing

It’s essential to test all components of your website to see if they work as expected. Playwright’s end to end testing capability helps you achieve this easily. However, if you’re comfortable using Python, you can pair it with the Playwright testing framework to run Python end to end testing on your website.

30 Top Automation Testing Tools In 2022

The sky’s the limit (and even beyond that) when you want to run test automation. Technology has developed so much that you can reduce time and stay more productive than you used to 10 years ago. You needn’t put up with the limitations brought to you by Selenium if that’s your go-to automation testing tool. Instead, you can pick from various test automation frameworks and tools to write effective test cases and run them successfully.

Panel Discussion: How to Decide What Automation Technology to Use [Testμ 2022]

To decide what automation technology to use, we brought together Joe Colantonio, Founder of TestGuild, Sneha. V, Director of Quality Engineering, Everfi, and Carlos Kidman, Director of Engineering, Stealth Startup. The panel discussion was hosted by Mudit Singh, Marketing head at LambdaTest. Mudit decided to take a step backwards and let the panel discussion happen.

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.