Senthilkumar Ramasamy

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Blockchain insiders tell us why we don't need blockchain

Visualizing Pandas' Pivoting and Reshaping Functions

I love using python’s Pandas package for data analysis. The 10 Minutes to pandas is a great place to start learning how to use it for data …

How do you create nested dict in Python?

I have 2 csv files. First one is data file and other one is mapping file. Mapping file has 4 columns Device_Name GDN Device_Type Device_OS These are …

Python Programming

Ethereum Smart Contracts in Python: a comprehensive(ish) guide

It’s one thing to get a basic smart contract up on Ethereum — just google “ERC20 Token Tutorial” you’ll find plenty of information on how to do it. …

Python Data Preparation Case Files: Removing Instances & Basic Imputation

<b>By Matthew Mayo, KDnuggets.</b><p>Data preparation covers a lot of potential ground: data integration, data transformation, feature selection, feature …

Fundamental Python Data Science Libraries: A Cheatsheet (Part 2/4)

If you are a developer and want to integrate data manipulation or science into your product or starting your journey in data science, here are the …

First Python Notebook — First Python Notebook 1.0 documentation

First Python Notebook¶<p>A step-by-step guide to analyzing data with Python and the Jupyter Notebook.<p>What you will learn¶<p>This textbook will guide you …

Python Programming

Python Strings Tutorial - String Functions/Operators With Examples

Hello viewers, in this post we will explore the world of Python Strings, commonly used functions, and some of the essential features. Strings in …

Python Programming

Tidy Data in Python

06 Dec 2016<p>I recently came across a paper named Tidy Data by Hadley Wickham. Published back in 2014, the paper focuses on one aspect of cleaning up …

Improve Your Python: Python Classes and Object Oriented Programming

<b>Note: Each day this week I'm going to republish one of my most popular posts. My hope is that people who missed them the first time might find them</b> …

From Python to Numpy

Latest version - August 2017<p>There are already a fair number of books about Numpy (see Bibliography) and a legitimate question is to wonder if another …

Python Programming

Wanna Learn About Vectors? Just Let Python Do the Work

Author: Rhett Allain. Rhett Allain Science<p>Date of Publication: 01.25.17.<p>Time of Publication: 11:00 am. 11:00 am<p>One of the most important topics …

Cheat sheet

Jupyter Notebook Viewer

<i>This notebook contains an excerpt from the Python Data Science Handbook by Jake VanderPlas; the content is available on GitHub.</i><p><i>The text is released</i> …

Statistics for Hackers

(Presented at PyCon 2016. Early version presented at StitchFix, Sept 2015. See the PyCon video at https://www.youtube.com/watch?v=Iq9DzN6mvYA)<p>The …

Stitch Fix

Tech Savvy: How Blockchains Could Transform Management

<b>Re-architecting the firm with blockchain:</b> Is Craig Wright really Satoshi Nakamoto, the mysterious creator of Bitcoin? Who knows — and really, who …

Blockchain technology: Is 2016 the year of the blockchain? | Answers On

As adoption of blockchain rises, financial transactions will become more streamlined and the number of entities involved in any exchange of capital, …

Programming for Data Science the Polyglot approach: Python + R + SQL

Liquid Bitcoin

Happy Halloween! Let’s talk about the scariest thing in the tech world today. No, no, not bubbles, drones, or unicorns: Bitcoin . Seriously. (Mostly.) Whether you think it’s a boondoggle scam, a libertarian Trojan horse that threatens governments, the scourge of Wall Street, or the thin edge of the …

Python's objects and classes — a visual guide

Python developers love to say that “everything is an object.” And indeed, when I teach Python classes, I say this several times, and many people nod …

5. Conditionals — How to Think Like a Computer Scientist: Learning with Python 3

5. Conditionals¶<p>Programs get really interesting when we can test conditions and change the program behaviour depending on the outcome of the tests. …

Python Programming

Experiences with Scaling Blockchain-based Data Stores

<b>Update: We migrated our blog. Check out the new Blockstack blog!</b><p>In April, we were invited to Microsoft to talk about our decentralized identity work …