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AppSec (By Rich Helton)

Python for

Droid (September 21, 2011)

State of Colorado Office of Cyber Security

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Class Introduction

  A good reference for an online Python class is http://code.google.com/edu/languages/google-python-class/introduction.html , PyQuick Python Class from Google University.   Another place for reference Python Documentation, http://www.python.org/doc/

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Python History

  From http://en.wikipedia.org/wiki/Python_(programming_language) ,   Python is an interpreted, general-purpose high-level programming language whose design philosophy emphasizes code readability.   The reference implementation of Python (CPython) is free and open source software and has a community-based development model, as do nearly all of its alternative implementations.   Python interpreters are available for many operating systems, and Python programs can be packaged into stand-alone executable code for many systems using various tools.   Python’s implementation was started in December 1989 by Guido van Rossum in the Netherlands as a successor to the ABD programming language.

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Android Python

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Android Python

  Android is basically a Micro Edition of Linux, and because Linux normally runs Python, Android can add a package to run Python.   See http://hameedullah.com/develop-your-first-android-application-in-python.html

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Set up the Android SDK

  First the Android environment, Software Development Kit (SDK), needs to be set up on the local Desktop, http://developer.android.com/sdk/installing.html :

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Android Virtual Device (AVD)

 An AVD will have to be created for debugging and testing, this is your target device,

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Android Python

  Create an AVD from your now installed Android SDK, by creating a new Virtual Device, http://developer.android.com/guide/developing/devices/index.html

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Android Python

  The “New” Virtual Device for Android,

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AVD Created

  The new AVD called “PythonDev”,

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AVD Start

  Start “PythonDev”,

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Use the Browser in the AVD

  Open the Browser in “PythonDev”, and go to http://code.google.com/p/android-scripting so install Android Scripting

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Download SL4A

  After tapping on the QR code icon (center box) to download,

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Install SL4A

  Double click the download to install,

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SL4A Installed

  Installed,

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Now Python has to be installed

  Go back in the browser and to the SL4A website, hit the download URL for Python for Android and you will get,

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Install

  After downloading, you need to install Python,

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Run a script

  Go to applications and select SL4A,

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Run HelloWorld.py

  Select the Run icon on script,

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Says “Hello, Android!”

  You get the “Hello, Android!”

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See the scripts

  Android uses a bridge, called “adb” to talk from the desktop to the emulator. Under the android SDK/platform-tools, run “adb shell ls /sdcard/sl4a/scripts”,

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Write a small script

  We are going to write a small script that prints the inputted name with a greeting, Notepad will work,

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Set the scripts

  Run “adb push myGreet.py /sdcard/sl4a/scripts”, to copy this python file to the emulator,

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Execute the script

  Execute the “myGreet.py” script,

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Greeting

  After typing in your name, you get a greeting,

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Questions? Have a Good Day