How to Calculate the Weighted Average of a Numpy Array in Python?

Numpy Weighted Average np.average(array, axis=0, weights=[0.1,0.1,0.8])

Problem Formulation: How to calculate the weighted average of the elements in a NumPy array? Definition weighted average: Each array element has an associated weight. The weighted average is the sum of all array elements, properly weighted, divided by the sum of all weights. Here’s the problem exemplified: Quick solution: Before we discuss the solution … Read more

How to Index Elements in NumPy Arrays?

NumPy is a popular Python library for data science for array, vector, and matrix computations. This puzzle introduces basic indexing of elements in NumPy arrays. Problem Formulation: How to index elements in NumPy arrays? Indexing 1D Arrays with Positive Indices The most simple use of indexing is with the square bracket notation and positive integers: … Read more

How to Become a Python Freelancer—and Earn $1,000 on the Side? [A Step-by-Step Tutorial]

Pyhton Freelancer

Do you want to earn money as a Python freelancer? But you just start out learning Python? This article leads you step-by-step through the adventure of becoming a Python freelancer. Learn about the exact steps you need to do to become a Python freelancer – starting out as a Python newbie. Without losing any time, let’s dive into the 7 steps of becoming a Python freelancer.

Python Dictionary – The Ultimate Guide

Python comes with several built-in data types. These are the foundational building blocks of the whole language. They have been optimised and perfected over many years. In this comprehensive tutorial, we will explore one of the most important: the dictionary (or dict for short). For your convenience, I’ve created a comprehensive 8000-word eBook which you … Read more

Introduction to Slicing in Python

Slicing is a concept to carve out a substring from a given string. Use slicing notation s[start:stop:step] to access every step-th element starting from index start (included) and ending in index stop (excluded). All three arguments are optional, so you can skip them to use the default values (start=0, stop=len(lst), step=1). For example, the expression … Read more