Exception existing connection is forcibly closed using python

I recommend you take:
https://github.com/kaltura/KalturaGeneratedAPIClientsPython/archive/11.6.0.zip

As to how to use HTTPs, a simple matter of passing https://www.kaltura.com instead of http://www.kaltura.com.
I'd recommend doing so for security reasons but I doubt it is the cause of your issue.

If you're still having issues with the version I posted above, please share your code.

Thanks,