How do you implement explicit waits in Playwright to deal with page loading or network delays?
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Implementing Explicit Waits in Playwright (Python) to Handle Page Loading & Network Delays
Playwright inherently waits for elements and events, but for more control, explicit waits help manage dynamic loading and network delays.
1. Using page.wait_for_selector()
Waits until an element appears in the DOM and is visible:
2. page.wait_for_load_state()
Waits for page lifecycle states: 'load', 'domcontentloaded', 'networkidle'
3. Waiting for a Specific Event (e.g., Navigation)
Wait for navigation or API responses:
4. Using Assertions with Timeout
Playwright’s built-in expect() from playwright.sync_api.expect auto-waits:
Best Practices:
-
Use
wait_for_selector()for dynamic DOM changes. -
Use
expect()for fluent assertions with built-in waits. -
Prefer
networkidlewhen waiting for heavy background requests.
These strategies improve test reliability and reduce flakiness caused by timing issues.
Read More
How do you launch a browser using Playwright in Python?
How does Playwright’s auto-waiting mechanism work for elements and page events?
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