September 21, 2020 Python Leave a comment

Creating and Deleting Directories with Python

This article continues with our series on interacting with the file system in Python. The previous articles dealt with reading and writing files. Interestingly, the file system is much more than a way to store/retrieve data to disk. There are also various other types of entries such as files, directories, sockets (for inter-process communication), named pipes, both soft and hard links, as well as special files (block devices). Reading and writing from and to them is done in a similar […]

September 21, 2020 Python Leave a comment

Single Page Apps with Vue.js and Flask: AJAX Integration

AJAX Integration with REST API Thanks for joining me for the fifth post on using Vue.js and Flask for full-stack web development. This post will be fairly short, but highly valuable as I will be demonstrating how to connect the front-end and back-end applications using Asynchronous Javascript and XML (aka, AJAX). The code for this post can be found on my GitHub account under the branch FifthPost. Series Content Seup and Getting to Know VueJS Navigating Vue Router State Management […]

September 21, 2020 Python Leave a comment

Reading and Writing Lists to a File in Python

As serialized data structures, Python programmers intensively use arrays, lists, and dictionaries. Storing these data structures persistently requires either a file or a database to work with. This article describes how to write a list to file, and how to read that list back into memory. To write data in a file, and to read data from a file, the Python programming language offers the standard methods write() and read() for dealing with a single line, as well as writelines() […]

September 21, 2020 Python Leave a comment

Single Page Apps with Vue.js and Flask: JWT Authentication

JWT Authentication Welcome to the sixth installment to this multi-part tutorial series on full-stack web development using Vue.js and Flask. In this post I will be demonstrating a way to use JSON Web Token (JWT) authentication. The code for this post can be found on my GitHub account under the branch SixthPost. Series Content Seup and Getting to Know VueJS Navigating Vue Router State Management with Vuex RESTful API with Flask AJAX Integration with REST API JWT Authentication (you are […]

September 21, 2020 Python Leave a comment

Basic Socket Programming in Python

In general, network services follow the traditional client/server model. One computer acts as a server to provide a certain service and another computer represents the client side which makes use of this service. In order to communicate over the network a network socket comes into play, mostly only referred to as a socket. This kind of socket communication can even be used internally in a computer for inter-process communication (IPC). This article explains how to write a simple client/server application […]

September 21, 2020 Python Leave a comment

Implementing SVM and Kernel SVM with Python’s Scikit-Learn

A support vector machine (SVM) is a type of supervised machine learning classification algorithm. SVMs were introduced initially in 1960s and were later refined in 1990s. However, it is only now that they are becoming extremely popular, owing to their ability to achieve brilliant results. SVMs are implemented in a unique way when compared to other machine learning algorithms. In this article we’ll see what support vector machines algorithms are, the brief theory behind support vector machine and their implementation […]

September 21, 2020 Python Leave a comment

Single Page Apps with Vue.js and Flask: Deployment

Deployment to a Virtual Private Server Welcome to the seventh and final installment to this multi-part tutorial series on full-stack web development using Vue.js and Flask. In this post I will be demonstrating how do deploy the application built throughout this series. The code for this post can be found on my GitHub account under the branch SeventhPost. Series Content Seup and Getting to Know VueJS Navigating Vue Router State Management with Vuex RESTful API with Flask AJAX Integration with […]

September 21, 2020 Python Leave a comment

Local and Global Variables in Python

One of the basic elements of programming languages are variables. Simply speaking a variable is an abstraction layer for the memory cells that contain the actual value. For us, as a developer, it is easier to remember the name of the memory cell than it is to remember its physical memory address. A valid name can consist of characters from ‘a’ to ‘z’ (in both lower and upper cases) as well as digits. No spaces or special characters, like umlauts […]

September 21, 2020 Python Leave a comment

Implementing PCA in Python with Scikit-Learn

With the availability of high performance CPUs and GPUs, it is pretty much possible to solve every regression, classification, clustering and other related problems using machine learning and deep learning models. However, there are still various factors that cause performance bottlenecks while developing such models. Large number of features in the dataset is one of the factors that affect both the training time as well as accuracy of machine learning models. You have different options to deal with huge number […]

September 21, 2020 Python Leave a comment

Implementing LDA in Python with Scikit-Learn

In our previous article Implementing PCA in Python with Scikit-Learn, we studied how we can reduce dimensionality of the feature set using PCA. In this article we will study another very important dimensionality reduction technique: linear discriminant analysis (or LDA). But first let’s briefly discuss how PCA and LDA differ from each other. PCA vs LDA: What’s the Difference? Both PCA and LDA are linear transformation techniques. However, PCA is an unsupervised while LDA is a supervised dimensionality reduction technique. […]

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