Workaround for Using Extensions Like MetaMask | Long Action Delays

[FloopyG]

I am new to web scraping and SeleniumBase, so sorry if this question seems pretty stupid.

While trying to use MetaMask with SeleniumBase, I discovered that it is possible to interact with it just as I did with Playwright—by directly accessing the web page whenever I expect a pop-up (e.g., opening chrome-extension://{EXTENSION_ID}/home.html). However, when attempting to do so, I encountered the following exception:

Traceback (most recent call last):
File "D:\Projects\sbWeb3Base\main.py", line 7, in
sb.open(f"chrome-extension://{EXTENSION_ID}/home.html")
File "C:\Users.......\AppData\Local\Programs\Python\Python39\lib\site-packages\seleniumbase\fixtures\base_case.py", line 244, in open
raise Exception('Invalid URL: "%s"!' % url)
Exception: Invalid URL: "chrome-extension://nnmflneemandambaednjdgnbjkjocbcg/home.html"!

I edited page_utils.py at lines 169 and 114 (apparently, these functions verify the given URL) by adding "chrome-extension:" to each. This allowed the extension's page to open successfully. However, any action I try to perform on it takes a long time, whereas actions on other pages within the same session work fine.

I am not sure what causes these long delays when interacting with extension pages, and I haven't been able to figure it out through debugging.

I can provide the source code if needed and would really appreciate any help.

[FloopyG]

After some testing, I figured out that:

• After the first installation (or in our case, the first session load), MetaMask automatically opens a new page, which can interfere with scripts. To handle this, I used user_data_dir to save a persistent browser context (which I need to use anyway). I initially load all of my sessions and then perform the necessary actions.

• The slow action time on extension pages resolves itself if CDP mode is used. I am not sure why, but it helps. This doesn’t fully answer the underlying questions, but for me, these workarounds are good enough. Hopefully, they will help someone else as well.

Also, I just wanted to say thanks for creating SeleniumBase! It has proven to be very useful, easy to use, and will simplify a lot of things for me.