Python webinar 4th june

Power of Python with bigdata
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At the end of this module, you will be able to
Objectives
 Why Python is popular with Bigdata
 How we can use Python in Bigdata
 How Python helps to do Analytics
 Why Python is trending for Automation
 Where Python is in terms of DataFrames

Why Python?
 Python is a great language for the beginner programmers since it is easy-to-learn and easy-to-maintain.
 Python’s biggest strength is that the bulk of it’s library is portable. It also supports GUI Programming and
can be used to create Applications portable on Mac, Windows and Unix X-Windows system.
 With libraries like PyDoop and SciPy, it’s a dream come true for Big Data Analytics.

Growing Interest in Python

Demo: Web Scraping using Python
 This example demonstrates how to scrape basic financial data from IMDB webpage
 We shall use open source web scraping framework for Python called Beautiful Soup to crawl and
extract data from webpages
 Scraping is used for a wide range of purposes, from data mining to monitoring and automated testing

Demo: Collecting Tweets using Python
 This example demonstrates how to extract historical tweets for a particular brand like “nike” or “apple”
 We shall make a REST API call to twitter to extract tweets
 This data can be further used to perform sentiment analysis for a particular brand on Twitter

Big Data
 Lots of Data (Terabytes or Petabytes)
 Big data is the term for a collection of data
sets so large and complex that it becomes
difficult to process using on-hand database
management tools or traditional data
processing applications
 The challenges include capture, curation,
storage, search, sharing, transfer, analysis,
and visualization
cloud
tools
statistics
No SQL
compression
storage
support
database
analize
information
terabytes
processing
mobile
Big Data

Un-Structured Data is Exploding
Complex, Unstructured
Relational
 2500 exabytes of new information in 2012 with internet as primary driver
 Digital universe grew by 62% last year to 800K petabytes and will grow to 1.2 “zettabytes” this year

Hadoop for Big Data
 Apache Hadoop is a framework that allows for the distributed processing of large data sets across clusters of
commodity computers using a simple programming model
 It is an Open-source Data Management with scale-out storage & distributed processing

Hadoop and MapReduce
Hadoop is a system for large scale data processing
It has two main components:
 HDFS – Hadoop Distributed File System (Storage)
» Distributed across “nodes”
» Natively redundant
» NameNode tracks locations
 MapReduce (Processing)
» Splits a task across processors
» “near” the data & assembles results
» Self-Healing, High Bandwidth
» Clustered storage
» Job Tracker manages the Task Trackers
Map-Reduce
Key Value

Data Cleansing / Preparation.
Writing Map Reduce Using Python.
Leveraging Analytical power of Python on Big Data Set.
Why Python is popular with Big data

Demo: Data Preparation / Cleaning
Extracting Data from JSON
- Extract Data from Complex JSON for further processing.
Stop word analysis for text analytics
- Remove stop words from a text Paragraph for further processing.

Demo: Word Count using Hadoop Streaming API
 The example shows the simple word count application written in Python
 We shall use Hadoop Streaming APIs to run MapReduce code written in Python
 Word Count application can be used to index text documents/files for a given “search query”

PyDoop – Hadoop with Python
 PyDoop package provides a Python API for Hadoop MapReduce and
HDFS
 PyDoop has several advantages over Hadoop’s built-in solutions for
Python programming, i.e., Hadoop Streaming and Jython
 One of the biggest advantage of PyDoop is it’s HDFS API. This
allows you to connect to an HDFS installation, read and write files, and
get information on files, directories and global file system properties
 The MapReduce API of PyDoop allows you to solve many complex
problems with minimal programming efforts. Advance MapReduce
concepts such as ‘Counters’ and ‘Record Readers’ can be implemented
in Python using PyDoop
Python can be used to write Hadoop MapReduce programs and applications to access HDFS API for Hadoop with
PyDoop package

Demo: Writing Hive UDFs using Python
Hive UDF (User Defined Function) to convert the unixdate to weekofday[1-7]

Demo: Python NLTK on Hadoop
Leveraging Analytical power of Python on Big Data Set. (MR + NLTK)
Perform stop word removal using Map Reduce.

Python and Data Science
 Python is an excellent choice for Data
Scientist to do his day-to-day activities as it
provides libraries to do all these things
 Python has a diverse range of open source
libraries for just about everything that a
Data Scientist does in his day-to-day work
 Python and most of its libraries are both
open source and free
The day-to-day tasks of a data scientist involves many interrelated but different activities such as accessing and
manipulating data, computing statistics and , creating visual reports on that data, building predictive and
explanatory models, evaluating these models on additional data, integrating models into production systems, etc.

SciPy.org
SciPy (pronounced “Sigh Pie”) is a Python-based ecosystem of open-source software for mathematics, science, and
engineering.
NumPy
Base N-dimensional
array package
IPython
Enhanced Interactive
Console
SciPy library
Base N-dimensional
array package
Sympy
Symbolic mathematics
Matplotlib
Comprehensive 2D
Plotting
pandas
Data structures
and analysis

Demo: Zombie Invasion Model
This is a lighthearted example, a system of ODEs(Ordinary differential equations) can be used to model a "zombie
invasion", using the equations specified by Philip Munz.
The system is given as:
dS/dt = P - B*S*Z - d*S
dZ/dt = B*S*Z + G*R - A*S*Z
dR/dt = d*S + A*S*Z - G*R
There are three scenarios given in the program to show how Zombie Apocalypse vary with different initial
conditions.
This involves solving a system of first order ODEs given by: dy/dt = f(y, t) Where y = [S, Z, R].
Where:
S: the number of susceptible victims
Z: the number of zombies
R: the number of people "killed”
P: the population birth rate
d: the chance of a natural death
B: the chance the "zombie disease" is transmitted (an alive person becomes a zombie)
G: the chance a dead person is resurrected into a zombie
A: the chance a zombie is totally destroyed

Python Pandas – Data Frames

Demo : Python Pandas
 Find the top 5 rated movies
Using the huge movie data-set (movie rating, user details etc. ) that is being collected now a days, we
need to do the below analysis:
 Find the Top 5 movies rated across age – groups
 Find on which movies do women and men most disagree on?

LIVE Online Class
Class Recording in LMS
24/7 Post Class Support
Module Wise Quiz
Project Work
Verifiable Certificate
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How it Works?

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Course Topics
 Module 1
» Getting Started with Python
 Module 2
» Sequences and File Operations
 Module 3
» Deep Dive - Functions, Sorting, Errors and
Exception Handling
 Module 4
» Regular Expressions, its Packages and Object
Oriented Programming in Python
 Module 5
» Debugging, Databases and Project Skeletons
Module 6
» Machine Learning Using Python – I
Module 7
» Machine Learning Using Python – II
Module 8
» Introduction to Hadoop
 Module 9
» Hadoop and Python
 Module 10
» Web Scraping using Python and Project Work

Questions
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Python webinar 4th june

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Python webinar 4th june