Скачать или смотреть How to Fix Chrome with Selenium That Closes Immediately After .quit()

Discover the solution to the issue of Chrome with Selenium closing unexpectedly after initiating a new instance. Learn how to properly manage your WebDriver in Python for better memory management.
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This video is based on the question https://stackoverflow.com/q/70781973/ asked by the user 'Bearclaw' ( https://stackoverflow.com/u/6454347/ ) and on the answer https://stackoverflow.com/a/70782675/ provided by the user 'Max Daroshchanka' ( https://stackoverflow.com/u/5226491/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Problem: Chrome Closes Immediately After Restart

If you're using Selenium with Python to automate browser tasks, you may have encountered a frustrating issue: after closing the Chrome WebDriver using .quit(), the subsequent attempt to start a new Chrome instance results in it closing immediately. This problem often manifests when you're automating processes, and can be especially troubling if your program relies on continual web interactions.

What Causes This Problem?

This issue can be attributed to the improper management of the WebDriver instance. When you quit the driver with driver.quit(), you need to ensure that the new driver instance is correctly assigned and managed. Failing to do so may lead to unexpected behavior, including the new Chrome window closing immediately after opening due to lack of a proper reference in your code.

The Solution: Correctly Assigning the WebDriver Instance

To resolve this issue, you need to ensure that after quitting the old instance of Chrome, the newly created instance is properly assigned to the driver variable. Here’s how to modify your code:

Step-by-Step Code Adjustment

Quit the Driver: Ensure you call driver.quit() to close the WebDriver instance.

Reset Iteration Counter: It's good practice to reset your iteration counter after quitting.

Add a Delay: Allow a short pause for the resources to be released before starting the new instance.

Assign the New Driver: This is the crucial change - you need to assign the new WebDriver instance to the same driver variable.

Here’s the revised code:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Highlighted

Line Modification: The line driver = webdriver.Chrome() replaces the previous instance creation without assignment. This is essential to maintain access to the WebDriver instance for any further operations.

Sleep Timing: The sleep commands help manage resource allocation and ensure that any memory issues are being addressed.

Conclusion: Better Memory Management in Automation Scripts

Using Selenium can lead to memory management issues if you don’t handle your WebDriver instances correctly. By ensuring that every new instance of Chrome is properly assigned to the driver variable post-quit, you’ll enhance the robustness of your automation scripts. With the above modifications, you should be able to prevent Chrome from closing unexpectedly and be able to continue your automated tasks seamlessly.

If you encounter further issues or have specific use cases, feel free to share! Happy coding with Selenium!