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WIP - first pass updating content to prepare for CityCampRDU
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‎citycamp/index.html

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<DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Intro to Python ~ Girl Develop It</title>
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<meta name="description" content="This is the Girl Develop It Intro to Python course.">
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<meta name="author" content="Girl Develop It">
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
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<link rel="stylesheet" href="../reveal/css/reveal.min.css">
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<link rel="stylesheet" href="../css/gdicool.css" id="theme">
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<!-- For syntax highlighting -->
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<link rel="stylesheet" href="../css/dark.css">
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<!-- If use the PDF print sheet so students can print slides-->
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<link rel="stylesheet" href="../reveal/css/print/pdf.css" type="text/css" media="print">
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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<!-- load the markdown file for all of the slide content -->
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<section id="slide-content"
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data-separator="^@@@\n\n"
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data-vertical="^\n\n"
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data-notes="^Note:">
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</section>
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</div>
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<footer>
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<div class="copyright">
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Intro to Python ~ Girl Develop It ~
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<a rel="license" href="http://creativecommons.org/licenses/by-nc/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="../images/cc-license.png" /></a>
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</div>
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</footer>
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</div>
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<script src="../reveal/lib/js/head.min.js"></script>
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<script src="../reveal/js/reveal.min.js"></script>
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<script>
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// Utility function for parsing query params. (has some limitations
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// WRT multi-value params, but is sufficient for determining
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// the markdown file to use
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function get_query_param_by_name(name) {
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name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
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var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
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results = regex.exec(location.search);
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return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
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}
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(function() {
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// Determine Markdown file to use by the 'part' query param.
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var part = get_query_param_by_name('part');
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if (part) {
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document.getElementById('slide-content').dataset.markdown = 'slides/' + part + '.md';
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} else {
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// Default to using the menu
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document.getElementById('slide-content').dataset.markdown = 'slides/menu.md';
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}
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// Initialize reveal
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// Full list of configuration options available here:
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// https://github.com/hakimel/reveal.js#configuration
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Reveal.initialize({
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controls: true,
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progress: true,
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history: true,
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center: true,
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slideNumber: true,
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theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
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transition: Reveal.getQueryHash().transition || 'default', // default/cube/page/concave/zoom/linear/none
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// Optional libraries used to extend on reveal.js
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dependencies: [
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{ src: '../reveal/lib/js/classList.js', condition: function() { return !document.body.classList; } },
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{ src: '../reveal/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: '../reveal/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
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{ src: '../reveal/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
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{ src: '../reveal/plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
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{ src: '../reveal/plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
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]
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});
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})();
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</script>
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</body>
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</html>

‎citycamp/slides/contents.md

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####[Part 1](?part=part1) - Intro to programming in Python
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What is programming? What is Python? We'll tackle these concepts, set up a development environment, and get started working in the Python shell.
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####[Part 2](?part=part2) - Structured programming: Functions, Loops, and conditionals
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We'll be creating small programs in the text editor, implementing control flow and loading these programs into the shell.
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####[Part 3](?part=part3) - Python data structures and other essential built-ins
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Lists, dictionaries and other built-in containers give the Python programmer tremendous power. We'll use these combined with other Python built-ins to process text files for information.
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####[Part 4](?part=part4) - Object oriented programming
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What is Object-Oriented Programming and how can it help make programming easier? We'll also get started on some projects that you can do with your new Python skills.
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####[Exercises](?part=exercises) - Additional Exercises

‎citycamp/slides/exercises.md

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![Girl Develop It Logo](../images/gdi_logo_badge.png)
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###Intro to Python
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####Additional Exercises
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###Functions
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* Write a program that uses at least one function to solve a geometry problem
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* The program will generally have three steps:
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* Obtain input
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* Call a function to calculate the answer
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* Display the answer
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* Hint: You can take user input with raw_input() as before, or use the example
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below to take arguments from the command line
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* Download [geometry.py](http://calebsmith.github.io/gdi-intro-python/examples/geometry.py) and use it as an example
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Note: Let's Develop It 15 Minutes
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###Text processing
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Write a program that opens a text file and does some processing.
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* The program should take a word as input and determine if the word appears in the file
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* The program should use at least one function to do its work and you should be able to import this function in a Python shell and call it with a word and filename
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The next page lists the things you will need.
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Note: Let's develop it: 15 minutes
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###Text processing - Requirements
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* Use the functions from [helpers.py](http://calebsmith.github.io/gdi-intro-python/examples/helpers.py) to help with reading in the lines and/or words of the file
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* Download a plain text english dictionary like the following: [english.txt](http://calebsmith.github.io/gdi-intro-python/examples/english.txt) and put it into the same directory as your python file.
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* Download a book in plain text from [Project Gutenburg](http://www.gutenberg.org/wiki/Main_Page) and put it into the same directory as your python file.
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The next slide shows some code to help you get started.
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###Text processing - Example Code
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```python
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from helpers import generate_cleaned_lines
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def is_word_in_file(word, filename):
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for line in generate_cleaned_lines(filename):
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# line will be a string of each line of the file in order
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# Your code goes here.
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# Your code should do something with the word and line variables and assign the value to a variable for returning
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input_word = raw_input("Enter a word to search for:")
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answer = is_word_in_file(input_word, 'pride.txt')
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# Display the answer in some meaningful way
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```
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I have used [Pride and Prejudice](http://calebsmith.github.io/gdi-intro-python/examples/pride.txt) from Project Gutenburg with my example code. You can click this link and copy/paste the text into a new text file called 'pride.txt' and save it in the same folder as your code

‎citycamp/slides/menu.md

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<img src="../images/gdi_logo_badge.png" alt="Girl Develop It Logo" style="width: 300px;"/>
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###Intro to Python
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####Menu
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[Section 1](?part=part1)
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[Section 2](?part=part2)
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[Section 3](?part=part3)
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<div class="clearfix"> </div>
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[Additional Exercises](?part=exercises)
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[Contents](?part=contents)

‎citycamp/slides/part1.md

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![Girl Develop It Logo](../images/gdi_logo_badge.png)
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###Intro to Python
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####Section 1
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## Welcome
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Girl Develop It is here to provide affordable and accessible programs to learn software through mentorship and hands-on instruction.
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Some rules
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* We are here for you
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* Every question is important
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* Help each other
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* Have fun
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###What we will cover today
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* Why Python? <!-- .element: class="fragment" -->
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* What is programming? <!-- .element: class="fragment" -->
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* Variables and arithmetic <!-- .element: class="fragment" -->
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* Statements and Error Messages <!-- .element: class="fragment" -->
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###Why Python?
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* Suitable for beginners, yet used by professionals
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* Readable, maintainable code
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* Rapid rate of development
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* Few "magical" side-effects
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* Variety of applications
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Note: Block 1 begins - 25 minutes
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###What is Python used for?
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* System Administration (Fabric, Salt, Ansible)
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* 3D animation and image editing (Maya, Blender, Gimp)
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* Scientific computing (numpy, scipy)
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* Web development (Django, Flask)
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* Game Development (Civilization 4, EVE Online)
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###Who is using Python?
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* Disney
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* Dropbox
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* Canonical and Red Hat
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* Google
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* NASA
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* Caktus
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###What is programming?</h3>
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* Teaching the computer to do a task
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* A program is made of one or more files of code, each of which solve part of the overall task
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* Programming code is human readable but also needs a form that the computer can run directly. This form is not human readable.
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* Don't focus on what's "under the hood" for now. We will "drive the car" first
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##Block 2
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Note: 30 minutes
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###Working in repl.it
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Navigate to http://repl.it in a browser. Find "Python3" under languages
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* Follow along with the examples in the slides. Type them in! <!-- .element class="fragment" -->
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* Feel free to explore as well. You will not accidentally break things <!-- .element class="fragment" -->
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###Variables and Arithmetic
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```python
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> 3 + 4
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=> 7
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> 2 * 4
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=> 8
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> 6 - 2
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=> 4
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> 4 / 2
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=> 2
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```
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```python
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> a = 2
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> b = 3
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> c = a + b
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> print(c)
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=> 5
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```
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```python
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> a = 0
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> a = a + .5
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> print(a)
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=> 0.5
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```
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###Strings
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```python
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> a = 'Hello '
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> b = 'World'
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> c = a + b
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> print(c)
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=> 'Hello World'
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```
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###Data types
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* Variables are a name for some data <!-- .element class="fragment" -->
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* Variables always have a "type" <!-- .element class="fragment" -->
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* The type defines what it can do <!-- .element class="fragment" -->
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* The type can be found using: type() <!-- .element class="fragment" -->
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```python
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> print type(4)
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=> <type 'int'>
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> a = 4
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> print type(a)
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=> <type 'int'>
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> print type("But I don't like spam")
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=> <type 'str'>
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> print type(3.5)
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=> <type 'float'>
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```
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###Type Errors
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* Variables of a given type can be used with a set of operators <!-- .element class="fragment" -->
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* An int or float can be used with any of: +, -, \*, / <!-- .element class="fragment" -->
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* A string can be used with any of: +, \* <!-- .element class="fragment" -->
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* What happens if we try to use division or subtraction with a string? <!-- .element class="fragment" -->
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```python
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> print "Spam" / "eggs"
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Traceback (most recent call last):
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File "<stdin>", line 1, in <module>
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TypeError: unsupported operand type(s) for /: 'str' and 'str'
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```
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###Errors
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* An Exception gives us some information about the cause of the error <!-- .element class="fragment" -->
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* Some examples are SyntaxError, TypeError and NameError exceptions. <!-- .element class="fragment" -->
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###Errors - continued ...
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* A \# is a code comment. These are not evaluated by Python
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```python
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# SyntaxError - Doesn't conform to the rules of Python.
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# This statement isn't meaningful to the computer
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> 4spam)eggs(garbage) + 10
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# NameError - Using a name that hasn't been defined yet.
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> a = 5
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> print b
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# TypeError - Using an object in a way that its type does not support
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> 'string1' / 'string2'
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```
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###Let's Develop It
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* We'll practice what we've learned in the shell
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* Review the slides on your computer and practice entering anything you didn't fully understand before
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* Ask the teacher or a TA for any help
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Note: Let's develop it: 5 minutes.
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###User Input
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To obtain user input, use 'input()'. This will become a string
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We use float() to make it a number
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```python
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input_value = input("Enter a radius:")
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radius = float(input_value)
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area = 3.14159 * radius * radius
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print('The area of a circle with radius', input_value, 'is', area)
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```
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###Let's Develop It
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Write your own program that uses input and does something else with the value
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You can use float() to treat the input as a number if you need a number, or you can use the input directly if you need a string
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Note: Let's develop it: 10 minutes
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###Any Questions?

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