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<!DOCTYPE html>
<html>
<head>
<title>SalzPUG Python Coding Dojo</title>
<meta charset="utf-8">
<style>
@import url(https://fonts.googleapis.com/css?family=Yanone+Kaffeesatz);
@import url(https://fonts.googleapis.com/css?family=Droid+Serif:400,700,400italic);
@import url(https://fonts.googleapis.com/css?family=Ubuntu+Mono:400,700,400italic);
body { font-family: 'Droid Serif'; }
h1, h2, h3 {
font-family: 'Yanone Kaffeesatz';
font-weight: normal;
}
.remark-code, .remark-inline-code { font-family: 'Ubuntu Mono'; }
.logo img { width: 100%; }
.tdd { display: block; text-align:center; }
.tdd img { transform: scale(0.8); }
</style>
</head>
<body>
<textarea id="source">
class: center, middle
.logo[]
# Python Coding Dojo
.left[```python
from datetime import date
today = date.today()
today.strftime('%B %-d, %Y')
```]
---
layout: true
# Coding Dojo?
---
* Code
* Learn
* Have Fun
---
* Safe place, not work
* Our goal: to learn
* *Not* our goal: to finish the task
---
layout: false
# Practices
* Test-Driven Development
* Pair Programming
---
layout: true
# Test-Driven Development
---
.tdd[]
---
## Case Study: Fizz buzz
> Given a number either output
> * "Fizz", if its divisable by three
> * "buzz", if its divisable by five
> * otherwise the number itself
https://en.wikipedia.org/wiki/Fizz_buzz
---
## Iteration 1
```python
from nose.tools import *
import fizzbuzz
*def test_1_returns_1():
* assert_equal(fizzbuzz.fizzbuzz(1), "1")
```
--
```python
def fizzbuzz(number):
return 1
```
---
## Iteration 2
```python
from nose.tools import *
import fizzbuzz
def test_1_returns_1():
assert_equal(fizzbuzz.fizzbuzz(1), "1")
*def test_2_returns_2():
* assert_equal(fizzbuzz.fizzbuzz(2), "2")
```
--
```python
def fizzbuzz(number):
return str(number)
```
---
## Iteration 3
```python
from nose.tools import *
import fizzbuzz
def test_1_returns_1():
assert_equal(fizzbuzz.fizzbuzz(1), "1")
def test_2_returns_2():
assert_equal(fizzbuzz.fizzbuzz(2), "2")
*def test_3_returns_Fizz():
* assert_equal(fizzbuzz.fizzbuzz(3), "Fizz")
```
--
```python
def fizzbuzz(number):
if number == 3:
return "Fizz"
return str(number)
```
---
.center[What will be the next test?]
---
layout: false
# Pair Programming
* Driver
* types at the computer
--
* Navigator
* looks for *tactical defects* (syntax errors, typos, etc.)
* looks for *strategic defects* (implementation or design fails to accomplish its goal)
* strategic, long-term thinker
--
An effective pair should be in constant discussion.
---
# Workflow
* Introduction
* Discussion
* Working on the problem
* 1 driver, 1 navigator
* changed every 5 minutes (audience -> navigator -> driver)
* Break
* Working on the problem (second round)
* Retrospective
---
# lcd
Convert numbers to LCD output
--
0 1 2 3 4 5 6 7 8 9
--
```
_ _ _ _ _ _ _ _
| | | _| _| |_| |_ |_ | |_| |_|
|_| | |_ _| | _| |_| | |_| |
```
---
# Retrospective
--
* Happy with the result?
* whats good?
* whats bad?
* more refactoring necessary?
--
* Did we learn anything new?
--
* Did anything unexpected happen?
--
* What do we still need to practice more?
--
* What should we do differently in the next dojo?
--
* What will you do differently in your day-to-day job?
</textarea>
<script src="https://gnab.github.io/remark/downloads/remark-latest.min.js">
</script>
<script>
var slideshow = remark.create({
highlightLines: true
});
</script>
</body>
</html>