Build the application

What is CAPTCHA?

Captcha is strategy used to ensure sites against spam. Objective is to prevent intuitive sites from being spammed by sifting through naturally created input. Abbreviation CAPTCHA means ‘Totally Automated Public Turing test to distinguish Computers and Humans’. Captchas are generally utilized when web applications require client input. Envision you are running online store and need to offer your clients chance to compose item surveys in remarks segment. For this situation, you need to guarantee that passages are really from your clients or if nothing else from human site guests. You will regularly go over naturally produced spam remarks – in most pessimistic scenario connecting to your opposition....

Requirements

Flask framework: Flask is an API of Python that allows us to build up web-applications. Flask’s framework is more explicit than Django’s framework and is also easier to learn because it has less base code to implement a simple web-Application. Flask-session-captcha library: A captcha implementation for flask using flask-sessionstore and captcha packages. Each captcha challenge answer is saved in the server-side session of the challenged client. MongoDB: MongoDB, the most popular NoSQL database, is an open-source document-oriented database. The term ‘NoSQL’ means ‘non-relational’. It means that MongoDB isn’t based on the table-like relational database structure but provides an altogether different mechanism for storage and retrieval of data....

Build the application

You can install all the required dependencies using the following command...

Stepwise Implementation

Step 1: Create the UI...