Is it possible to use Python to write cross-platform apps for both iOS and Android?
PythonAndroidIosCross PlatformBeewarePython Problem Overview
Is it possible to use Python to write cross-platform apps for both iOS and Android
Python Solutions
Solution 1 - Python
An option is kivy: a cool cross platform Python framework which works for Android, Win7, Linux, MacOSX and iOS.
Update: kivy project is growing daily, now supports also Raspberry Pi
Solution 2 - Python
For Android Google provides something called ASE (Android Scripting Environment) which allows scripting languages (Python included) to run on Android. More details here
For iOS, it might be quite a bit more complicated (and I'd advise to check the latest version of iOS SDK agreement to check the current state of the law - apple tends to allow & disallow such apps periodically). For the technical part you might need to interface between Python & Objective C as well as do some wizardry to statically link all the libraries Python requires; full details are available here. Another approach for iOS Python development would be to embed a Python interpreter into you app and distribute your Python script with it (so to play nicely with Apple rules). In this case your Python application would be a Python interpreter which is packaged with your script and runs it automatically.
Second option is to use Kivy framework(kivy.org) - it's a framework to write touch-friendly applications in Python and package them for different platforms. It's had Android support for a while, and recently added iOS support
Solution 3 - Python
For writing a GUI applicaion you can use the Toga library,then package it with briefcase into a Android and/or iOS app (or Windows, Linux, macOS etc).
Note: the project is still in alpha state but under rapid development.
Solution 4 - Python
You can try and combine [tag:brython] and [tag:cordova]. The Brython wiki describes how to write an Android app using Brython, which might provide the necessary information to do this also using Cordova. I haven't tested this yet, but it sounds promising. You should however be aware that due to its nature, Brython cannot support x86-compiled packages such as OpenCV (see e.g. here). On the other hand, if you know a bit about JavaScript / HTML5, you can use the WebView native functions, e.g. http://www.brython.info/gallery/three.html.
Solution 5 - Python
As @piertoni mentioned, BeeWare enables native iOS & Android apps to be written in Python.