iPython on Raspberry Pi

Quick talk on how to install iPython on Raspberry Pi

Transcript

1. iPython on Raspberry Pi or any Linux
2. What is iPython? First off: www.ipython.org • iPython is a powerful extension to the already powerful Python shell like IDLE • It makes executing short bits of code simple, executing more complicated scripts easier, as well as contains extensions and modules useful for everyday development. Some of those extensions and modules include: ◦ Qt based GUI integration ◦ matplotlib integrated (render graphs and charts right from the command line) ◦ Parallel computing tools to spread workload among multiple machines ◦ iPython Notebook - Probably by far the coolest feature. It is a web- based interface that allows you to write code in your web browser and execute that code, and you don't even have to be sitting at that machine. Great for headless PC's (like a Raspberry Pi tucked away somewhere). Also great for keeping notes and snippets of code as well as a decent IDE or editor.
3. Python Package Index (pip) • Python Package Index ( aka 'pip') is a package management tool for Python that allows the installation and management of python components, modules, libraries, etc. • Similar to CPAN (if you have used Perl) • Easy to install software 'pip install ipython' • But first you must have pip installed on your machine. Type 'pip --version' at the command shell (Terminal) if you are unsure. • To install (at the command shell): ◦ sudo apt-get install python-pip ◦ For Fedora or Redhat 'sudo yum install python-pip ipython-gui' • If you use Python extensively, you'll probably use pip alot While you're at it: (Needed for iPython Notebook) • sudo apt-get install python-tornado (Needed for Qt GUI iPython, but doesn't work in Raspberry Pi) • sudo apt-get install pyside
4. Install iPython • sudo pip install ipython While you're at it (do this outside of X): • sudo pip install pyzmq • sudo pip install matplotlib On Windows: Go to www.ipython.org for instructions
5. It's installed, now what? You can run it from the command line: • ipython You can run a gui version using Qt (skip this on Raspberry Pi) • ipython qtconsole Coolest feature is the iPython Notebook. • ipython notebook --pylab --ip=* Note: For advanced secure configuration see: bit.ly/LzzCSx
6. iPython Command tips • %logstart - Auto logs your input into a .py file so you can play back execution. • %run - Run an external script • Type python code at the console to run. • Examples (Hello World and Fibonacci sequence): ◦ print "Hello world" Hello World ◦ a, b = 0, 1 while b < 10: print b, a, b = b, a+b 1 1 2 3 5 8
7. iPython Notebook Live Demonstration