Brief Intro to Programming
Jiří Baum <[email protected]>
| Newsgroups | gmane.org.user-groups.slug.general |
|---|---|
| Message-ID | <[email protected]> |
Hi, As promised at Friday's meeting, I'm sending a copy of the code from the second part of the talk. I'm sending it in two forms: * SLUG-2014-01.ipynb is the IPython Notebook file, which is the interactive exploratory programming environment I was using during my presentation. * SLUG-2014-01.py is an ordinary Python program, converted from the above. This is the more common form of Python programs. I've also uploaded my slides here: http://www.baum.com.au/~jiri/slug/what-is-programming.pdf Cheers Jiri -- Jiří Baum <[email protected]> Sabik Software Solutions Pty Ltd 0413 183 117 http://www.baum.com.au/sabik -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
SLUG-2014-01.py
(text/x-python, 841 B)
#!/usr/bin/python
# -*- coding: utf-8 -*-
# <nbformat>3.0</nbformat>
# <codecell>
print 'Hello World'
print 'How are you?'
# <codecell>
a = 1
print a
b = 2
print b
print a+b
b = 3*b
print b
# <codecell>
farmyard = ['dog', 'hen', 'horse', 'sheep', 'cow']
print farmyard
# <codecell>
print sorted(farmyard)
# <codecell>
def find_my(needle, haystack):
""" Narrate a search for needle in haystack. """
for animal in haystack:
if animal==needle:
print 'This is my %s.' % (animal)
return
else:
print 'This is not my %s! It is a %s!' %(needle,animal)
print 'There is no %s!' % (needle)
# <codecell>
find_my('cow', farmyard)
# <codecell>
find_my('shipwreck', ['coral', 'clownfish', 'anchor', 'mermaid', 'nemo'])
# <codecell>
find_my('ostrich', farmyard)
# <codecell>
SLUG-2014-01.ipynb
(text/plain, 5.3 KB)
{
"metadata": {
"name": "SLUG-2014-01"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "code",
"collapsed": false,
"input": [
"print 'Hello World'\n",
"print 'How are you?'"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Hello World\n",
"How are you?\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"a = 1\n",
"print a\n",
"b = 2\n",
"print b\n",
"print a+b\n",
"b = 3*b\n",
"print b"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"1\n",
"2\n",
"3\n",
"6\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"farmyard = ['dog', 'hen', 'horse', 'sheep', 'cow']\n",
"print farmyard"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"['dog', 'hen', 'horse', 'sheep', 'cow']\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"print sorted(farmyard)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"['cow', 'dog', 'hen', 'horse', 'sheep']\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"def find_my(needle, haystack):\n",
" \"\"\" Narrate a search for needle in haystack. \"\"\"\n",
" for animal in haystack:\n",
" if animal==needle:\n",
" print 'This is my %s.' % (animal)\n",
" return\n",
" else:\n",
" print 'This is not my %s! It is a %s!' %(needle,animal)\n",
" print 'There is no %s!' % (needle)"
],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 5
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"find_my('cow', farmyard)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"This is not my cow! It is a dog!\n",
"This is not my cow! It is a hen!\n",
"This is not my cow! It is a horse!\n",
"This is not my cow! It is a sheep!\n",
"This is my cow.\n"
]
}
],
"prompt_number": 6
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"find_my('shipwreck', ['coral', 'clownfish', 'anchor', 'mermaid', 'nemo'])"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"This is not my shipwreck! It is a coral!\n",
"This is not my shipwreck! It is a clownfish!\n",
"This is not my shipwreck! It is a anchor!\n",
"This is not my shipwreck! It is a mermaid!\n",
"This is not my shipwreck! It is a nemo!\n",
"There is no shipwreck!\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"find_my('ostrich', farmyard)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"This is not my ostrich! It is a dog!\n",
"This is not my ostrich! It is a hen!\n",
"This is not my ostrich! It is a horse!\n",
"This is not my ostrich! It is a sheep!\n",
"This is not my ostrich! It is a cow!\n",
"There is no ostrich!\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"help(find_my)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Help on function find_my in module __main__:\n",
"\n",
"find_my(needle, haystack)\n",
" Narrate a search for needle in haystack.\n",
"\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"help(math.sqrt)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Help on built-in function sqrt in module math:\n",
"\n",
"sqrt(...)\n",
" sqrt(x)\n",
" \n",
" Return the square root of x.\n",
"\n"
]
}
],
"prompt_number": 10
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 10
}
],
"metadata": {}
}
]
}