Pydroid 3 is the most easy to use and powerful educational Python 3 IDE for Android. Features:

• Offline Python 3.6 interpreter: no Internet is required to run Python programs.
• Full-featured Terminal Emulator, with a readline support (available in pip).
• Pip package manager and a custom repository for prebuilt wheel packages for heavy libraries, such as numpy, scipy, matplotlib, scikit-learn and jupyter.
• Examples available out-of-the-box.
• Built-in C, C++ and even Fortran compiler designed by n0n3m4, an author of C4droid, specially for Pydroid 3. It lets Pydroid 3 build any library from pip, even if it is using native code. You can also build & install dependencies from a command line.
• Cython support.
• PDB debugger with breakpoints and watches.
• Kivy graphical library with a shiny new SDL2 backend.
• PyQt5 support available in Quick Install repository along with matplotlib PyQt5 support with no extra code required.
• Matplotlib Kivy support available in Quick Install repository. Editor features:
• Code prediction, auto indentation and real time code analysis just like in any real IDE. *
• Extended keyboard bar with all symbols you need to program in Python.
• Syntax highlighting & themes.
• Tabs.
• Enhanced code navigation with interactive assignment/definition gotos.

• One click share on Pastebin.

• Features marked by asterisk are available in Premium version only. Quick manual. Pydroid 3 requires at least 170MB free internal memory. 200MB+ is recommended. More if you are using heavy libraries such as scipy. To run debug place breakpoint(s) clicking on the line number. SDL2/Kivy is detected with “import kivy”, “from kivy“ or "#Pydroid run sdl2”. PyQt5 is detected with “import PyQt5”, “from PyQt5“ or "#Pydroid run qt”.