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What a page object should do
A page object wraps a Playwright Page and exposes a higher-level, application-specific API. It can keep selectors in one place and provide reusable actions such as searching, opening a listing, or completing a checkout workflow. Playwright describes POM as an approach for simplifying authoring and maintenance in larger suites, not as a mandatory structure: Playwright’s Python page-object guide.
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Model a page or a meaningful component boundary, rather than automatically creating one class for every URL. Keep methods focused on recognizable actions or workflows. Avoid both a large inheritance hierarchy and a class that merely forwards every Playwright call; add an abstraction when it removes duplication or makes intent clearer.
Choose an organization that fits the suite
A practical starting layout separates behavior-oriented tests from page-specific UI knowledge. These names are conventions, not rules prescribed by Playwright.
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project/
├── pages/
│ ├── __init__.py
│ ├── search_page.py
│ └── checkout_page.py
├── tests/
│ ├── test_search.py
│ └── test_checkout.py
└── conftest.pyPut a page object in pages/ when it serves more than one test or when its responsibilities are substantial enough to name and maintain separately. Keep a tiny, one-off interaction in the test if extracting it would only add indirection. Use conftest.py for shared pytest fixtures when that makes setup easier to understand; it does not need to become a home for application behavior.
Build a small object around the pytest page fixture
The official Playwright Python pytest plugin provides the page fixture. The installation guide gives these setup commands:
pip install pytest-playwright
playwright installA synchronous page object can store a resilient locator and expose a user-level action:
from playwright.sync_api import Page
class SearchPage:
def __init__(self, page: Page):
self.page = page
self.search_term_input = page.get_by_role("textbox", name="Search")
def navigate(self) -> None:
self.page.goto("https://example.com")
def search(self, text: str) -> None:
self.search_term_input.fill(text)
self.search_term_input.press("Enter")The example domain is illustrative, and the accessible name Search must match the actual application. A test can receive the fixture, construct the object, and keep its scenario-specific expectation visible:
from playwright.sync_api import Page, expect
def test_search_shows_matching_results(page: Page) -> None:
search_page = SearchPage(page)
search_page.navigate()
search_page.search("headphones")
expect(page.get_by_role("heading", name="Search results")).to_be_visible()Import SearchPage from the module where the project keeps it. Assertions belong in the test when they express the behavior or outcome that makes that test valuable; the object can own reusable actions without taking over the scenario.
Choose locators that reflect the UI contract
Prefer locators based on what a user can perceive—roles with accessible names, labels, and other user-facing attributes. If the team has explicitly agreed on test IDs as its testing contract, those can be appropriate too. Playwright’s locator guide explains the locator model and selector choices: Locators.
- Prefer: a role and accessible name, such as
get_by_role("button", name="Submit order"), or a label such asget_by_label("Email address"). - Use deliberately: explicit test IDs when they are part of the application’s agreed test interface.
- Avoid: long CSS or XPath chains that encode incidental DOM structure and can break when markup changes.
The official POM guide includes a CSS-style locator for its own example, but that does not make DOM-shaped selectors the best default for every application. Check a locator against the real accessibility tree and the UI contract; an example locator is not evidence that a similarly named element exists in your site.
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Keep tests isolated and choose one API style
The Playwright pytest plugin’s fixtures provide separate browser contexts for tests, giving each test a fresh page environment. Constructing a page object from that test’s page fixture composes naturally with that isolation model. Avoid storing a mutable page or page object globally and sharing it between tests. The Python guide covers writing tests and fixture use.
Playwright’s Python API supports synchronous and asynchronous usage. Use the style already adopted by the project and keep calls consistent: synchronous methods run directly, while asynchronous methods must be awaited. Do not mix styles casually inside a test or page object.
If a project benefits from a fixture that constructs a page object, define it as a pytest fixture and have it wrap the supplied page. That is a practical composition of the Python plugin’s fixtures and pytest’s setup mechanisms. Playwright’s general fixture guide also illustrates providing page objects through fixtures, but its examples are in TypeScript; do not copy their syntax as Python.
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Decide when POM is worth the indirection
| Consideration | Direct Playwright calls in tests | Page objects |
|---|---|---|
| Repeated UI knowledge | Can repeat locators and actions across tests. | Can gather shared selectors and workflows in one place. |
| Scenario visibility | Short tests can show each interaction directly. | Clear method names preserve intent; opaque methods can hide what the test does. |
| UI change locality | A selector change may require edits in multiple tests. | Centralized selectors can reduce affected test files, though the object itself still needs maintenance. |
| Abstraction cost | Little extra structure for a one-off interaction. | Useful when reuse or clarity repays the added layer; unnecessary wrappers add indirection. |
| Test isolation | Use the test’s own fixture-provided page. | Construct the object from that same page; do not share mutable page state between tests. |
There is no documented universal directory layout or measured guarantee that POM improves stability, reduces defects, or saves a particular amount of maintenance time. Treat it as a design choice: introduce it where the resulting API makes tests easier to write and understand, and keep direct calls where they are already clearer.
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