Start with http://omz-software.com/pythonista/docs/ios/urlscheme.html and then in that script try to download (requests.get()) and https://pypi.org/project/pyrun the remote script.
Welcome!
This is the community forum for my apps Pythonista and Editorial.
For individual support questions, you can also send an email. If you have a very short question or just want to say hello — I'm @olemoritz on Twitter.