=====online cocktail napkin=====
""<small>links and notes for later organization</small>"">>[[CocktailNapkin2011 2011 Napkin]]
[[CocktailNapkin2010 2010 Napkin]]
[[CocktailNapkin2009 2009 Napkin]]
[[CocktailNapkin2008 2008 Napkin]]
[[CocktailNapkin2007 2007 Napkin]]
SpecialReading
WordsIReallyLike
ThumbDrive
[[CocktailQuestions Questions for Strangers]]>>

**String Data Structures (for when your JSON lib is a PITA)**
%%
)( - 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d
][ - 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d
}{ - 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d }{ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d ][ 1:a,b,c,d )( 2:a,b,c,d )( 3:a-b-c-d
%%

**init not found try passing init=bootargs**
~- On Asus EEE Netbook
~- To Fix
~~- Insert Ubuntu thumbdrive (on keychain)
~~- Reboot > Press ESC until you get Boot Menu
~~- Run without Installing
~~- See this post: http://askubuntu.com/a/73983/46766

**atta dict!**
%%(python)
"""
	ref: http://news.ycombinator.com/item?id=3881341
"""
from collections import defaultdict
from pprint import pprint
import pdb

class attrdict(defaultdict):
	def __getattr__(self, key): return self[key]
	def __setattr__(self, key, val): self[key]=val

def tree(): return attrdict(tree)

ca = tree()
ca.orange.santa_ana = 92704
ca.orange.anaheim = 92807

pprint(ca)

pdb.set_trace()
%%

**matplotlib custom color sequence**
%%(python)
"""
	A series of circle with custom colormap (red to green)
	
	USAGE
	python .dev/colormap.py
	
	REFERENCES:
	http://matplotlib.sourceforge.net/api/artist_api.html#matplotlib.patches.Circle
	http://www.scipy.org/Cookbook/Matplotlib/Show_colormaps
	http://stackoverflow.com/questions/9215658/plot-a-circle-with-pyplot
	http://stackoverflow.com/a/9544600/1093087
"""

import matplotlib.pyplot as plt
from matplotlib.colors import ListedColormap
from matplotlib import cm
from numpy import arange
import math

SOLID = 'solid'
GREY = (.75,.75,.75)

clamp = lambda v: min(max(0, v), 1)

def main():
	# simulate a smartphone
	h, w = 15.0/8.0, 51.0/16.0
	hpx, wpx = 480.0, 800.0
	dpi = math.sqrt(hpx*wpx) / math.sqrt(h*w)
	
	# or my laptop
	lhpx, lwpx = 1600.0, 900.0
	lhw = 17.3
	ldpi = math.sqrt(lhpx*lwpx) / math.sqrt(lhw)
	
	# set up color map
	colors = cm.gist_rainbow(arange(200))
	rg_map = ListedColormap(colors[:100], 'red-green')
	colors = rg_map.colors    
	
	# circle params
	minR, maxR = 4,8
	x,y = 2,0
	
	# build image
	fig = plt.Figure(figsize=(w,h), dpi=dpi)
	for n in range(0,100,3):   
		radius = minR + ((maxR-minR) * (n/100.0))
		x += maxR
		pt = (x,y)
		x += maxR + 4
		
		r = clamp(1 - (.66*n / 100.0))
		g = clamp(0 + (1.0*n / 100.0))
		b = 0

		# alternately, using a colormap
		#ci = math.floor((n/100.0)*len(colors))
		#rgba = colors[ci]
		#r,g,b = map(lambda n: int(round(n*255)), [v for v in rgba[:3]])

		# circle and edge
		c = plt.Circle(pt, radius, color=(r,g,b))
		o = plt.Circle(pt, maxR, fill=False, lw=1, ls=SOLID, edgecolor=GREY)

		plt.axes().add_artist(c)
		plt.axes().add_artist(o)
		print (pt, radius), (r,g,b)
		
		# label a few
		if (n/3) % 11 == 0:
			rv,gv,bv = map(lambda n: int(round(n*255)), [v for v in (r,g,b)])
			label = 'RGB: (%d,%d,%d)' % (rv,gv,bv)
			plt.axes().annotate(label, (x-radius, n+minR+12), size=12)
		
	plt.axes().set_xlim((0,wpx), auto=False)
	plt.axes().set_ylim((-hpx/2,hpx/2), auto=False)
	plt.axes().set_aspect('equal')
	plt.show()
		

def example():
	"""source: http://stackoverflow.com/a/9216646/1093087"""
	circle1=plt.Circle((0,0),.2,color='r')
	circle2=plt.Circle((.5,.5),.2,color='b')
	circle3=plt.Circle((1,1),.2,color='g',clip_on=False)

	fig = plt.gcf()
	fig.gca().add_artist(circle1)
	fig.gca().add_artist(circle2)
	fig.gca().add_artist(circle3)

	plt.show()

main()
%%

**Soup Request Test**
%%(python)
#!/usr/bin/python

"""
	proto.py

	PURPOSE
	Prototyping gyro (requests experiment).
	
	
	USAGE
	$ venv/bin/python dev/gyro/tests/dev/proto.py

	
	NOTES
	Uses requests, beautifulsoup


	REFERENCES
	http://docs.python-requests.org/en/latest/user/quickstart/#make-a-get-request
	http://www.crummy.com/software/BeautifulSoup/bs3/documentation.html#Quick%20Start
"""
#
# IMPORTS
#
# Python Imports
import unittest, sys, os, time
from os.path import (abspath, dirname, join as pathjoin, exists)
from datetime import(datetime, date, timedelta)
from random import (choice, sample)
import pdb
import re

# External Imports
import requests
from BeautifulSoup import BeautifulSoup as soup, Tag, NavigableString

# Extend sys.path
PROJECT_PATH = abspath(pathjoin(dirname(__file__), '../..'))

# Project Imports




#
# MODULE PARAMETERS
#



# Exception Classes
class NullException(Exception): pass


#
# Test Class
#
class PrototypeTest(unittest.TestCase):
	
	data_dir = pathjoin(PROJECT_PATH, 'test/data')
	
	#
	# Harness
	# 
	def setUp(self):
		pass
		
	def tearDown(self):
		pass

		
	#
	# New Methods
	#
	
	
	
	#
	# Unit Tests
	#
	
	
	
	#
	# Dev Tests
	#
	def testLastPageGoogleNoOmissions(self):
		url = "http://www.google.com/search"
		query = "hello world"
		start_at = 990
		
		#
		# REQUESTS
		#
		# prepare
		payload = dict(
			q = query,
			hl = "en",
			start = start_at,
			filter = 0
		)
		
		# get
		site = requests.get(url, params=payload)        
		raw = site.content
		
		# test
		needle = "to show you the most relevant results"
		self.assertFalse(needle in raw)
		self.assertTrue("Page 100" in raw)
		
		#
		# SOUP
		#
		# parser
		html = soup(site.content)
		results_block = html.findAll("li", { "class" : "g" })
		last_result = results_block[-1]
		
		# parse last result
		links = last_result.findAll("a")
		result_link = links[0].get("href")
		result_url = result_link.split('/url?q=')[1].split('&')[0]
		print result_url
		
		# test request
		self.assertTrue(results_block)
		
		# interact
		time.sleep(2)              
	
	def testLastPageGoogleOmitted(self):
		url = "http://www.google.com/search"
		query = "python language"
		start_at = 990
		
		#
		# REQUESTS
		#
		# prepare
		payload = dict(
			q = query,
			hl = "en",
			start = start_at
		)
		
		# get
		site = requests.get(url, params=payload)        
		raw = site.content
		
		# test
		needle = "to show you the most relevant results"
		self.assertTrue(needle in raw)
		
		#
		# SOUP
		#
		# parser
		html = soup(site.content)
		results_block = html.findAll("li", { "class" : "g" })
		last_result = results_block[-1]
		
		# parse last result
		links = last_result.findAll("a")
		result_link = links[0].get("href")
		result_url = result_link.split('/url?q=')[1].split('&')[0]
		print result_url
		
		# test request
		self.assertTrue(results_block)
		
		# interact
		#import pdb; pdb.set_trace()
		
		# don't arouse suspicion
		time.sleep(2)
		
	
	def testBeautifulSoup(self):
		"""parse my special wiki page"""
		url = "http://localhost/wikka/Gyro"
		site = requests.get(url)
		html = soup(site.content)
		
		# these work
		haystack = html.find("h3", { "id" : "hn_Haystack" })
		needle = html.find(text=re.compile('a beautiful needle'))
		
		# these don't work
		nostack = html.find("h4", { "id" : "hn_Haystack" })     # wrong tag
		noneedle = html.findAll(text="a beautiful needle")
		
		self.assertEqual(type(haystack), Tag)
		self.assertEqual(type(needle), NavigableString)
		self.assertFalse(nostack)
		self.assertFalse(noneedle)
		self.assertTrue("a beautiful needle" in str(html))
		self.assertTrue("a beautiful needle" in str(needle))
		
	
	def testRequests(self):
		"""pull my wiki"""
		url = "http://localhost/wikka/Gyro"
		site = requests.get(url)
		self.assertTrue(site.ok)
		self.assertTrue("a beautiful needle" in site.content)
	

	
	#
	# Smoke Tests
	#
	def testInstance(self):
		self.assertTrue(isinstance(self, unittest.TestCase))



#
# Main
#
if __name__ == "__main__":
	mod = sys.modules[globals()['__name__']]
	suite = unittest.TestLoader().loadTestsFromModule(mod)
	unittest.TextTestRunner(verbosity=2).run(suite)
%%

**Programming Collective Intelligence**
Source code: http://blog.kiwitobes.com/?p=44

**Install gevent to virtualenv Directory**
[[http://mirnazim.org/writings/python-ecosystem-introduction/ mirnazim.org]]
[[http://stackoverflow.com/questions/6431096/gevent-does-not-install-properly-on-ubuntu stackoverflow.com]]
[[https://groups.google.com/d/msg/gevent/GsRmocqmgN8/XUtWnIKJVHIJ groups.google.com]]
%%
# set up virtual env
source bin/activate

# install gevent
sudo apt-get install libevent-dev
export C_INCLUDE_PATH=/usr/include:/usr/local/include:/opt/local/include
pip install greenlet
pip install gevent
%%

**Python Temp Files**
Simple case:
%%(python)
import tempfile
...
temp_file_name = tempfile.NamedTemporaryFile().name
f = open(temp_file_name)
%%

Write to temp file:
%%(python)
file_contents = """hello world"""
temp_file = tempfile.NamedTemporaryFile()
temp_file.write(file_contents)
temp_file.seek(0)
f = open(temp_file.name)
%%

**Getting Setup with Virtualenv**
http://mirnazim.org/writings/python-ecosystem-introduction/
%%
# Install pip and virtualenv
sudo apt-get install python-pip python-dev build-essential 
sudo pip install pip --upgrade
sudo pip install virtualenv

# Setup a virtualenv
mkdir venv
virtualenv --distribute --no-site-packages venv

# Run from virtualenv
venv/bin/python
venv/bin/python myscript.py

# To activate/deactivate env
source bin/activate
(venv)$ deactivate
%%

**Draw Circle to Canvas in PlayN**
Stack Overflow Question: http://stackoverflow.com/questions/9478065/

**GWT Plugin for Eclipse**
Problem: http://stackoverflow.com/questions/8363560
Solution: http://askubuntu.com/questions/49557#94341

**Install Eclipse with ADT Plugin on Ubuntu 11.10**
[[http://askubuntu.com/questions/107192/how-can-i-install-eclipse-with-the-adt-android-development-tool-on-ubuntu-11-1 Ask Ubuntu]]
Pastebin20120223
http://stackoverflow.com/questions/9426715
[[http://code.google.com/p/google-web-toolkit/issues/detail?id=6887 related?]]
[[http://stackoverflow.com/questions/6482268/eclipse-indigo-cannot-install-android-adt-plugin possible solution?]]

**Color Maps**
http://matplotlib.sourceforge.net/examples/api/colorbar_only.html
http://matplotlib.sourceforge.net/examples/pylab_examples/show_colormaps.html
**""RdYlGn""**

**Installing Ubuntu 11.10 on [[http://www.google.com/products/catalog?hl=en&safe=off&q=HP+g7-1310us&gs_sm=12&gs_upl=1557545l1557545l6l1558924l1l1l0l0l0l0l146l146l0.1l2l0&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.,cf.osb&biw=1168&bih=593&um=1&ie=UTF-8&tbm=shop&cid=16780769756561576303&sa=X&ei=g0Q7T9maHcmr2AWbm9m0Cg&ved=0CF0Q8wIwAg HP G71310US]]**
HP Pavilion g7-1310us Intel Core i3-2350M Notebook
Chose [[http://www.ubuntu.com/download/ubuntu/download Ubuntu 11.10 64-Bit]]
Needed to deal with black screen issue detailed [[http://ubuntuforums.org/showthread.php?t=1613132 here]]
~- See **How to enable kernel options on the livecd (before install)**
~- Choose nomodeset (x will appear next to it)
~- Then select Install Ubuntu
~- After installation, need to follow direction for temporarily and then permanently modifying grub config with nomodeset flag. Hold down shift on boot to get to grub config.
~- On IRC chat, ludwin01 suggested 10.04 lts version did not have this problem. I'm working around it for now with grub flag.
~- My Ubuntu Forum post on issue: [[http://ubuntuforums.org/showthread.php?p=11695329#post11695329 http://ubuntuforums.org/showthread.php?p=11695329#post11695329]]
~- ""AskUbuntu"" Post: http://askubuntu.com/questions/105651/ 
~~- [[Pastebin20120219 Draft of Response]]

**Python Inheritance**
%%(python)


class Reveal(object):
	def __repr__(self):
		return "<%s %s>" % (self.__class__.__name__, self.__dict__)

class Yin(Reveal):
	def __init__(self, yin=100):
		self.yin = yin
		self.lightness = True
		self.darkness = False
		self.balance = False


class Yan(Reveal):
	def __init__(self, yan=100):
		self.yan = yan
		self.lightness = False
		self.darkness = True
		self.balance = False

class YinYan(Yin, Yan):
	def __init__(self, yin, yan):
		Yin.__init__(self, yin)
		Yan.__init__(self, yan)
		self.balance = True


yin = Yin(50)
yan = Yan(50)
yinyan = YinYan(50, 50)

print yin
print yan
print yinyan

# Prints
<Yin {'balance': False, 'yin': 50, 'lightness': True, 'darkness': False}>
<Yan {'balance': False, 'yan': 50, 'lightness': False, 'darkness': True}>
<YinYan {'balance': True, 'yin': 50, 'lightness': False, 'darkness': True, 'yan': 50}>
%%

**Send Email through Gmail with Python**
%%(python)
"""
	Send an email programmatically through Gmail.

	REFERENCES
	http://snippets.dzone.com/posts/show/757
	http://www.nixtutor.com/linux/send-mail-through-gmail-with-python/
	http://stackoverflow.com/questions/399129/#comment8985407_399240
"""
import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEBase import MIMEBase
from email.MIMEText import MIMEText
from email.Utils import COMMASPACE, formatdate
from email import Encoders
import os
from os.path import abspath, dirname, join

SMTP_SERVER = 'smtp.gmail.com:587'
SMTP_USER   = 'USER@gmail.com'
SMTP_PASS   = 'PASS'
EMAIL_FROM  = 'USER <%s>' % (SMTP_USER)

def send_gmail(to, subject, text, files=[]):
	assert type(to) == list
	assert type(files) == list
	from_ = EMAIL_FROM

	msg = MIMEMultipart()
	msg['From'] = EMAIL_FROM
	msg['To'] = COMMASPACE.join(to)
	msg['Date'] = formatdate(localtime=True)
	msg['Subject'] = subject

	msg.attach( MIMEText(text) )

	for file in files:
		part = MIMEBase('application', "octet-stream")
		part.set_payload( open(file,"rb").read() )
		Encoders.encode_base64(part)
		part.add_header('Content-Disposition', 'attachment; filename="%s"'
					   % os.path.basename(file))
		msg.attach(part)

	smtp = smtplib.SMTP(SMTP_SERVER)
	#smtp.set_debuglevel(1)
	smtp.ehlo()    # apparently this is required in python 2.5
	smtp.starttls()
	smtp.login(SMTP_USER, SMTP_PASS)
	smtp.sendmail(from_, to, msg.as_string() )
	smtp.close()


def test_email():
	to = 'YOUR_RECEPIENT@some_domain.com'
	subject = "Python Gmail Test"
	text = 'This is simply a test.'
	send_gmail([to], subject, text)
	print 'simple test complete'
%%

**Method Decorator**
%%(python)
def check_some_flag(method):
	def wrapper(self, *args, **kwargs):
		if not self.some_flag:
			raise Exception("some_flag not set")
		else:
			result = method(self, *args, **kwargs)
			return result
	return wrapper
%%

**Find Equation for Set of Points**
[[https://www.google.com/search?hl=en&output=search&sclient=psy-ab&q=python+find+equation&btnK= python find roots of equation]]
%%(python)
>>> import numpy
>>> x = [1,50,99]
>>> y = [2,1,0.5]
>>> a,b,c = numpy.polyfit(x,y,2)
>>> f = lambda x: a*x**2 + b*x + c
>>> f(1)
2.0
>>> f(20)
1.5528946272386506
>>> f(50)
1.0000000000000002
>>> f(90)
0.55435235318617249
>>> f(100)
0.49500208246563937
>>> f(99)
0.5
%%

Verizon Opt-Out Site: http://www.vzw.com/myprivacy

**Somewhat Improved Wikka Installer Routine**
Diff for wikka.php:
%%
diff -r c8f8537f5e21 -r 4e091af5eacf php/wikka/wikka.php
--- a/php/wikka/wikka.php	Tue Jan 17 10:01:24 2012 -0800
+++ b/php/wikka/wikka.php	Tue Jan 17 11:43:38 2012 -0800
@@ -509,11 +509,15 @@
 
 /**
  * Compare versions, start installer if necessary.
+ * Wait to start installer below if this is an upgrade so we can limit access
+ * to admin users.
  */
-if (!isset($wakkaConfig['wakka_version'])) $wakkaConfig['wakka_version'] = 0;
-if ($wakkaConfig['wakka_version'] !== WAKKA_VERSION)
-{
-	/**
+$is_new_install = ! isset($wakkaConfig['wakka_version']);
+$is_upgrade = $wakkaConfig['wakka_version'] !== WAKKA_VERSION;
+
+if ( $is_new_install ) {
+    $wakkaConfig['wakka_version'] = 0;
+    /**
 	 * Start installer.
 	 *
 	 * Data entered by the user is submitted in $_POST, next action for the
@@ -590,6 +594,7 @@
 	exit;
 }
 
+
 /**
  * Save session ID
  */
@@ -611,6 +616,39 @@
 }
 
 /**
+ * Check for upgrade. If so an user is admin, show setup page, else show
+ * a maintenance message to all other visitors.
+ */
+$is_admin = $wakka->IsAdmin($user);
+$at_install_step = ($_GET['installAction'] == 'writeconfig') && (isset($_POST['config']));
+$upgrade_allowed = $is_admin || $at_install_step;
+
+if ( $is_upgrade && $upgrade_allowed ) {
+	$installAction = 'default';
+	if (isset($_GET['installAction'])) $installAction = trim($_GET['installAction']);	#312
+	if (file_exists('setup'.DIRECTORY_SEPARATOR.'header.php'))
+	include('setup'.DIRECTORY_SEPARATOR.'header.php'); else print '<em class="error">'.ERROR_SETUP_HEADER_MISSING.'</em>'; #89
+	if
+	(file_exists('setup'.DIRECTORY_SEPARATOR.$installAction.'.php'))
+	include('setup'.DIRECTORY_SEPARATOR.$installAction.'.php'); else print '<em class="error">'.ERROR_SETUP_FILE_MISSING.'</em>'; #89
+	if (file_exists('setup'.DIRECTORY_SEPARATOR.'footer.php'))
+	include('setup'.DIRECTORY_SEPARATOR.'footer.php'); else print '<em class="error">'.ERROR_SETUP_FOOTER_MISSING.'</em>'; #89
+	exit;
+}
+elseif ( $is_upgrade && $_GET['install_help'] ) {
+    print "<h2> POST,GET, SESSION variables</h2>";
+    print '<pre>';
+    var_dump($_POST);
+    var_dump($_GET);
+    var_dump($_SESSION);
+    print '</pre>';
+}
+elseif ( $is_upgrade ) {
+    die('<h2>Site Undergoing Temporary Maintenance</h2><h4>Please check back shortly.</h4>');
+}
+
+
+/**
  * Run the engine.
  */
 if (!isset($handler)) $handler='';
%%

**IKEA Stand-Up Desks**
http://news.ycombinator.com/item?id=3442809
http://www.ikea.com/us/en/catalog/products/00115992/
http://www.ikea.com/us/en/catalog/products/60111123/
----

[[CategorySpecial]]