September 25, 2020 Python

The Singleton Design Pattern in Python

Introduction In this article, we’ll be diving into the Singleton Design Pattern, implemented in Python. As time progresses, software gets more tailored to solving specific problems in different domains. While there are many difference in the application-level of our software, some aspects of software design remain largely the same. These aspects might not remain the same for all software out there but will hold true for a lot of scenarios. Therefore, learning and understanding them will be highly beneficial in […]

September 25, 2020 Python

Reading and Writing JSON Files in Python with Pandas

Introduction Pandas is one of the most commonly used Python libraries for data handling and visualization. The Pandas library provides classes and functionalities that can be used to efficiently read, manipulate and visualize data, stored in a variety of file formats. In this article, we’ll be reading and writing JSON files using Python and Pandas. What is a JSON File? JavaScript Object Notation (JSON) is a data format that stores data in a human-readable form. While it can be technically […]

September 25, 2020 Python

The Bridge Design Pattern with Python

Introduction The Bridge Design Pattern is a Structural Design Pattern, which splits the abstraction from the implementation. In this article, we’ll be covering the motivation and implementation of the Bridge Design Pattern in Python. Design Patterns refer to a set of standardized practices or solutions to common architectural problems in software engineering. Motivation Behind the Bridge Design Pattern The Bridge Pattern prevents what’s called the cartesian product complexity explosion. The problem will be obvious going through an example. Suppose you’re […]

September 25, 2020 Python

Writing to a File with Python’s print() Function

Introduction Python’s print() function is typically used to display text either in the command-line or in the interactive interpreter, depending on how the Python program is executed. However, we can change its behavior to write text to a file instead of to the console. In this article, we’ll examine the many ways we can write to a file with the print() function. Redirecting a Python’s Script Output in the Terminal The quick and dirty way to redirect a Python script’s […]

September 25, 2020 Python

map(), filter(), and reduce() in Python with Examples

Introduction The map(), filter() and reduce() functions bring a bit of functional programming to Python. All three of these are convenience functions that can be replaced with List Comprehensions or loops, but provide a more elegant and short-hand approach to some problems. Before continuing, we’ll go over a few things you should be familiar with before reading about the aforementioned methods: What is an anonymous function/method or lambda? An anonymous method is a method without a name, i.e. not bound […]

September 25, 2020 Python

The Factory Method Design Pattern in Python

Introduction In this article, we’ll be diving into the Factory Method Design Pattern, implemented in Python. Design Patterns define tried and tested solutions to various recurring problems in software development. They do not represent actual code, but rather ways in which we can organize our code for the optimum results. In a world of limited resources, Design Patterns help us achieve the most results with the least amount of used resources. It is also important to note that Design Patterns […]

September 25, 2020 Python

Binary Search in Python

Introduction In this article, we’ll be diving into the idea behind and Python implementation of Binary Search. Binary Search is an efficient search algorithm that works on sorted arrays. It’s often used as one of the first examples of algorithms that run in logarithmic time (O(logn)) because of its intuitive behavior, and is a fundamental algorithm in Computer Science. Binary Search – Example Binary Search works on a divide-and-conquer approach and relies on the fact that the array is sorted […]

September 25, 2020 Python

Reading and Writing Excel (XLSX) Files in Python with the Pandas Library

Introduction Just like with all other types of files, you can use the Pandas library to read and write Excel files using Python as well. In this short tutorial, we are going to discuss how to read and write Excel files via DataFrames. In addition to simple reading and writing, we will also learn how to write multiple DataFrames into an Excel file, how to read specific rows and columns from a spreadsheet, and how to name single and multiple […]

September 25, 2020 Python

any() and all() in Python with Examples

Introduction to any() and all() In this tutorial, we’ll be covering the any() and all() functions in Python. The any(iterable) and all(iterable) are built-in functions in Python and have been around since Python 2.5 was released. Both functions are equivalent to writing a series of or and and operators respectively between each of the elements of the passed iterable. They are both convenience functions that shorten the code by replacing boilerplate loops. Both methods short-circuit and return a value as […]

September 25, 2020 Python

Calculating Mean, Median, and Mode in Python

Introduction When we’re trying to describe and summarize a sample of data, we probably start by finding the mean (or average), the median, and the mode of the data. These are central tendency measures and are often our first look at a dataset. In this tutorial, we’ll learn how to find or compute the mean, the median, and the mode in Python. We’ll first code a Python function for each measure followed by using Python’s statistics module to accomplish the […]

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