It’s much easier with the extra space on an iPad. There’s a git client called Working Copy that works well, and an official GitHub client.

Also consider PyTO for Python on iOS. It’s fully open source and in active development, but much less polished than Pythonista which unfortunately has been moribund for several years now.

Further development options include Codea that’s an excellent Lua dev environment, and Apple’s Swift Playgrounds that provides access to SwiftUI, and later this year will enable uploading apps developed in it to the store.