Discover AI-native insights at Testμ Conference‘25

How to use not_to_have_value method in Playwright Python

Best Python code snippet using playwright-python

_assertions.py

Source:_assertions.py

...295            FrameExpectOptions(expectedText=expected_text, timeout=timeout),296            value,297            "Locator expected to have Value",298        )299    async def not_to_have_value(300        self,301        value: Union[str, Pattern],302        timeout: float = None,303    ) -> None:304        __tracebackhide__ = True305        await self._not.to_have_value(value, timeout)306    async def to_have_text(307        self,308        expected: Union[List[Union[Pattern, str]], Pattern, str],309        use_inner_text: bool = None,310        timeout: float = None,311    ) -> None:312        __tracebackhide__ = True313        if isinstance(expected, list):...

test_assertions.py

Source:test_assertions.py

...144    page.goto(server.EMPTY_PAGE)145    page.set_content("<input type=text id=foo>")146    my_input = page.locator("#foo")147    expect(my_input).to_have_value("")148    expect(my_input).not_to_have_value("bar", timeout=100)149    my_input.fill("kektus")150    expect(my_input).to_have_value("kektus")151def test_assertions_locator_to_be_checked(page: Page, server: Server) -> None:152    page.goto(server.EMPTY_PAGE)153    page.set_content("<input type=checkbox>")154    my_checkbox = page.locator("input")155    expect(my_checkbox).not_to_be_checked()156    with pytest.raises(AssertionError):157        expect(my_checkbox).to_be_checked(timeout=100)158    expect(my_checkbox).to_be_checked(timeout=100, checked=False)159    with pytest.raises(AssertionError):160        expect(my_checkbox).to_be_checked(timeout=100, checked=True)161    my_checkbox.check()162    expect(my_checkbox).to_be_checked(timeout=100, checked=True)...

StackOverFlow community discussions

Questions

Discussion

Is there a way to return response body in Playwright?

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

How to get a 100 Images from google images

python playwright - issue with adding cookies from file

Python - Playwright timeout

How to use nix-shell to install playwright from PyPi?

Playwright: click on element within one/multiple elements using Python

Running Playwright on Google colab gives error : asyncio.run() cannot be called from a running event loop

Download currnet image with python playwright

Where can I configure the browser behavior of Playwright in VSCode?

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 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

so you could put something along the lines of hash here:

    src = pkgs.python38Packages.fetchPypi {
      inherit pname version;
      data_sha256 = "sha256:<yourhash>"
    };

while building your pkgs, so that it's defined explicitly (rn, its parsing it as '' as evident in the op)

https://stackoverflow.com/questions/67980171/how-to-use-nix-shell-to-install-playwright-from-pypi

Not sure about Colab, but in a normal Jupyter notebook you do:

import nest_asyncio
nest_asyncio.apply()

Install with pip install nest-asyncio, and then you can run async stuff in a notebook.

Edit: You are also trying to run a GUI instance of Chrome, with that headless=False - change that to headless=True, Colab doens't run with a GUI.

https://stackoverflow.com/questions/73084593/running-playwright-on-google-colab-gives-error-asyncio-run-cannot-be-called

I tried this and it worked (I used an element handler instead of arguments[0]):

selector = page.query_selector('.my-image')
img_base64 = page.evaluate("""(selector_handle) => {
    var cnv = document.createElement('canvas');
    cnv.width = 300; cnv.height = 300;
    cnv.getContext('2d').drawImage(selector_handle, 0, 0);
    return cnv.toDataURL('image/jpeg').substring(22);
}""", selector)
with open(r"image.jpg", 'wb') as f:
    f.write(base64.b64decode(img_base64))

https://stackoverflow.com/questions/71375383/download-currnet-image-with-python-playwright

Blogs

Check out the latest blogs from LambdaTest on this topic:

How To Handle Captcha In Selenium

With the rapidly evolving technology due to its ever-increasing demand in today’s world, Digital Security has become a major concern for the Software Industry. There are various ways through which Digital Security can be achieved, Captcha being one of them.Captcha is easy for humans to solve but hard for “bots” and other malicious software to figure out. However, Captcha has always been tricky for the testers to automate, as many of them don’t know how to handle captcha in Selenium or using any other test automation framework.

How To Use WebDriverManager In Selenium

Different Types Of Locators In Selenium WebDriver

This article is a part of our Content Hub. For more in-depth resources, check out our content hub on Selenium Locators Tutorial.

40 Best UI Testing Tools And Techniques

A good User Interface (UI) is essential to the quality of software or application. A well-designed, sleek, and modern UI goes a long way towards providing a high-quality product for your customers − something that will turn them on.

Selenium Tutorial: Basics and Getting Started

Selenium is still the most influential and well-developed framework for web automation testing. Being one of the best automation frameworks with constantly evolving features, it is poised to lead the industry in all aspects as compared to other trending frameworks like Cypress, Puppeteer, PlayWright, etc. Furthermore, using Selenium gives you the flexibility to use different programming languages like C#, Ruby, Perl, Java, Python, etc., and also accommodate different operating systems and web browsers for Selenium automation testing.

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.