Chrome Hangs

[NoahCardoza]

When I run the screenshot sample code it attempts to download Chrome. But after downloading it hangs.

[W:pyppeteer.chromium_downloader] start chromium download. Download may take a few minutes. [W:pyppeteer.chromium_downloader] chromium download done. [W:pyppeteer.chromium_downloader] chromium extracted to: /Users/<username>/.pyppeteer/local-chromium/497674

It does download the Chrome app. If I kill the script and retry, it won't download the app again but it doesn't do anything either.

This is the trace when I ^C

^CTraceback (most recent call last): File "test.py", line 13, in <module> browser = launch() File "/usr/local/lib/python3.6/site-packages/pyppeteer/launcher.py", line 117, in launch return Launcher(options, **kwargs).launch() File "/usr/local/lib/python3.6/site-packages/pyppeteer/launcher.py", line 84, in launch time.sleep(0.1) KeyboardInterrupt

Any ideas?

[miyakogi]

Thank you for reporting.
Which OS are you using?

[NoahCardoza]

OS X Seria

[miyakogi]

Reproduced on my mac.
I'll check and try to fix it.

[NoahCardoza]

Sweet, thanks!

[miyakogi]

Maybe downloaded zip was broken when extracted by python.

Workaroud:

• manually download chromium from https://storage.googleapis.com/chromium-browser-snapshots/Mac/497674/chrome-mac.zip
• extract zip
• move extracted chromium.app to ~/.pyppeteer/local-chromium/497674/chrome-mac/ and overwrite old one.

could you try this workaround?

[NoahCardoza]

Yes, that seems to fix it.

Although now I get this error:

Traceback (most recent call last): File "test.py", line 9, in <module> asyncio.get_event_loop().run_until_complete(main(browser)) File "/usr/local/Cellar/python3/3.6.2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/asyncio/base_events.py", line 467, in run_until_complete return future.result() File "test.py", line 7, in main await page.screenshot({'~/': 'example.png'}) File "/usr/local/lib/python3.6/site-packages/pyppeteer/page.py", line 511, in screenshot if mimeType == 'image/png': UnboundLocalError: local variable 'mimeType' referenced before assignment

[miyakogi]

Keep 'path' as is.
If you want to save image in another directory, that line would become await page.screenshot({'path': '/path/to/example.png'}).

And the UnboundLocalError is fixed by #3.
If any problem still exist, try update pyppeteer to the latest dev versoin.

python3 -m pip install -U git+https://github.com/miyakogi/pyppeteer@dev

[NoahCardoza]

Ah I thought I was supposed to replace path with the path I wanted to save at.

Thanks for the help!

[miyakogi]

😄

[alexcandrews]

Hate to bring this up again, experiencing the same issue. On the latest release of pyppeteer. Running the example downloads chromium and appears to unzip it just fine. However the script never makes it past launch(). Tried the fix suggested here with no luck. Also uninstalled pyppeteer and removed the .pyppeteer folder, no luck. Also tried installing a previous version of pyppeteer (0.0.17) but experienced the same.

Also on macOS High Sierra.

Thanks for any ideas!

###UPDATE
Saw #88 and have made the fix (I was working with 3.7). Thanks!