Abhishek Tiwari atiw003

## Evolution of a Python programmer.py
#Newbie programmer
def factorial(x):
    if x == 0:
        return 1
    else:
        return x * factorial(x - 1)
print factorial(6)


#First year programmer, studied Pascal

## CSV Parsing In Python and R
#Using csv reader
import csv
csvreader=csv.reader(open('x.csv','r'))
list = [ x[0] for x in csvreader]

#Using zip
columns = zip(*csvreader)
nocolumns=len(columns)


## Column Based Access to CSV files
#!/usr/bin/python

import codecs
import csv

try:
    from cStringIO import StringIO
except ImportError:
    from StringIO import StringIO

## Unique elements in a python list
f = [1, 2, 3, 4, 5, 5, 5, 6]
set(f)
print list(set(f))
#A set object is an unordered collection of distinct hashable objects. Common uses include membership testing, removing duplicates from a sequence, and computing mathematical operations such as intersection, union, difference, and symmetric difference.


## html5_slides.html
<!DOCTYPE html>

<!--
  Copyright 2010 Google Inc.
  All rights reserved.
  Original slides:
                 Marcin Wichary
  Modifications:
                 Ernest Delgado
                 Alex Russell

## example_note_keeping_app.rb
require 'rubygems'
require 'sinatra'
require 'redis'

# To use, simply start your Redis server and boot this
# example app with:
#   ruby example_note_keeping_app.rb
#
# Point your browser to http://localhost:4567 and enjoy!
#

## recommendation.rb
require 'rubygems'
require 'neo4j'
include Neo4j

Transaction.new

# create some people
andreas = Node.new :name => 'andreas'
peter = Node.new :name => 'peter'
kalle = Node.new :name => 'kalle'

## Rubycsvparsing.rb
#Parsing with plain Ruby
 filename = 'data.csv'
 file = File.new(filename, 'r')

 file.each_line("\n") do |row|
   columns = row.split(",")

   break if file.lineno > 10
 end

## csv2array.rb
def csv_to_array(file_location)
      csv = CSV::parse(File.open(file_location, 'r') {|f| f.read })
      fields = csv.shift
      csv.collect { |record| Hash[*(0..(fields.length - 1)).collect {|index| [fields[index],record[index].to_s] }.flatten ] }
    end

## git-line-count.rb
# 1) Put this file in your working directory
# 2) run 'sudo gem install active_support grit'
# 3) run 'ruby git-line-count.rb'
# 4) run 'open loc.html'
# 5) yay

require 'rubygems'
require 'active_support'
require 'grit'
require 'open-uri'
	#Newbie programmer
	def factorial(x):
	if x == 0:
	return 1
	else:
	return x * factorial(x - 1)
	print factorial(6)


	#First year programmer, studied Pascal
	#Using csv reader
	import csv
	csvreader=csv.reader(open('x.csv','r'))
	list = [ x[0] for x in csvreader]

	#Using zip
	columns = zip(*csvreader)
	nocolumns=len(columns)
	#!/usr/bin/python

	import codecs
	import csv

	try:
	from cStringIO import StringIO
	except ImportError:
	from StringIO import StringIO
	f = [1, 2, 3, 4, 5, 5, 5, 6]
	set(f)
	print list(set(f))
	#A set object is an unordered collection of distinct hashable objects. Common uses include membership testing, removing duplicates from a sequence, and computing mathematical operations such as intersection, union, difference, and symmetric difference.
	<!DOCTYPE html>

	<!--
	Copyright 2010 Google Inc.
	All rights reserved.
	Original slides:
	Marcin Wichary
	Modifications:
	Ernest Delgado
	Alex Russell
	require 'rubygems'
	require 'sinatra'
	require 'redis'

	# To use, simply start your Redis server and boot this
	# example app with:
	# ruby example_note_keeping_app.rb
	#
	# Point your browser to http://localhost:4567 and enjoy!
	#
	require 'rubygems'
	require 'neo4j'
	include Neo4j

	Transaction.new

	# create some people
	andreas = Node.new :name => 'andreas'
	peter = Node.new :name => 'peter'
	kalle = Node.new :name => 'kalle'
	#Parsing with plain Ruby
	filename = 'data.csv'
	file = File.new(filename, 'r')

	file.each_line("\n") do \|row\|
	columns = row.split(",")

	break if file.lineno > 10
	end
	def csv_to_array(file_location)
	csv = CSV::parse(File.open(file_location, 'r') {\|f\| f.read })
	fields = csv.shift
	csv.collect { \|record\| Hash[*(0..(fields.length - 1)).collect {\|index\| [fields[index],record[index].to_s] }.flatten ] }
	end
	# 1) Put this file in your working directory
	# 2) run 'sudo gem install active_support grit'
	# 3) run 'ruby git-line-count.rb'
	# 4) run 'open loc.html'
	# 5) yay

	require 'rubygems'
	require 'active_support'
	require 'grit'
	require 'open-uri'