# Month: April 2019

## How to Get Accepted By Upwork as a Freelance Programmer? A Practical Field Study

Do you want to start earning money and selling your skills as a freelance coder? Good choice! Being a freelance coder is an excellent opportunity in today’s marketplace. You are getting paid to learn the programming language you love. Where else can you get such a good deal? Is Upwork for you? To share my …

## People Who Bought X Also Bought …? [A Simple NumPy Tutorial]

Imagine you are Jeff Bezos. One of the most successful features of your company Amazon is product recommendation. “People who bought X also bought Y.” Roughly speaking, this feature alone has made you billions. For you, Jeff Bezos, product recommendation is the most important algorithm in the world, isn’t it? In this article, you’ll learn …

## Simple Association Analysis in One Line Python

Have you ever bought a product recommended by Amazon’s algorithms? Chances are that you are guilty of having purchased many such products. The recommendation algorithms are often based on a technique called “association analysis”. In this article, you’ll learn more about the basic idea of association analysis and how to tip your toe into the …

## [Python Mini Game] Can You Help Alice Find Her Dad?

Alice 👧 has lost her father in the maze. 😟 To make matters worse, the maze is full of evil animals 🐍 that keep her father captured. 😭 The animals play a game with her: they will only leave her through if she solves the difficult Python puzzles. 🎲 Fortunately, you have trained your puzzle …

## How to Find Outliers in Python Easily?

Can you spot the outliers in the following sequence: 000000001000000001? Detecting outliers fast can be mission critical for many applications in military, air transport, and energy production. This article shows you the most basic outlier detection algorithm: if an observed value deviates from the mean by more than the standard deviation, it is considered an …

## How to Filter in Python using Lambda Functions?

Real-world data is noisy. But as a data scientist, you get paid to get rid of the noise, make the data accessible, and create meaning. Thus, filtering data is vital for real-world data science tasks. In this article, you’ll learn how to create a minimal filter function in a single line of code. I first …

## How to Start Earning Money as a Python Coder at Freelancer.com?

Want to earn more money on the side — and learn to code Python in the process? Becoming a Python freelancer may just be the small side-business you have been looking for. You can work from home, create your new and valuable high-income skill Python development, and push your communication skills to the next level. …

## The Ultimate Introduction to Sorting in NumPy

Imagine you need to find a book in your bookshelf. What situation would you prefer: A) your bookshelf contains all your books in no specific order, or B) your bookshelf contains all books alphabetically sorted by title. Of course, option B) would save you a lot of time – especially if you access your bookshelf …

## How to Use Slice Assignment in NumPy?

Real-world data is seldomly clean: It may contain errors because of faulty sensor, or it may contain missing data because of damaged sensors. In this one-liner section, you learn about how to quickly handle smaller cleaning tasks in a single line of code. The Basics Say, you have installed a temperature sensor in your garden …

## NumPy Cheat Sheet: The Top 5 Tips and Tricks

Cheat sheets are the 80/20 principles for coding: learn 80% of the features in 20% of the time. For my “Coffee Break Python” email subscribers, I create a weekly Python cheat sheet. Currently, NumPy is all over the space, so for the launch of my new book “Coffee Break NumPy“, I have created the following …

## How to use NumPy Boolean Indexing to Uncover Instagram Influencers

This article will give you a practical one-liner solution and teach you how to write concise NumPy code using boolean indexing and broadcasting in NumPy. The Basics NumPy plays an important role in the Python programming language. Not only does it add basic linear algebra functionality to Python, but, with its array data structure, it …

## What’s the Best NumPy Book?

Fear of missing out in data science? Data science and machine learning are taking over. Data-driven decision making penetrates every single company nowadays. Data science is indeed the “sexiest job in the 21st century“! There is one Python library which is the basis of any data science related computation you can undertake as a Python …