When it comes to create a REST API, there are many programming languages out there that one can use. However, in this blog we will learn how to create this very API using Python Flask. As Python is gaining more popularity day by day and is one of the most famous programming languages.Plus it is not easy to separate the front-end and back-end developed when the code is written using some basis languages, such as PHP.Given to the fact, Python Flask works is the best option.
Flask is a BSD licensed light-weight web application framework which is based on Jinja2, Werkzeug, and other good plans. With this micro framework, one can easily create a back-end server and install as many extensions as required to support the features of it. Some of the features include authentication,encryption,database interfacing, CSRF protection and many more.
Installation of Library and Dependencies:
Primarily, it is necessary to install the library and dependencies required to create a REST API.For that, Â Flask-REST ful is the most important extension to use. This is because it will enable the rapid development of the said API and that too with a little to no setup.
To use Flask-REST ful extension, make sure you code in Python 2.6, 2.7, 3.3, 3.4, 3.5 or 3.6.
After that, it is time to Install the API testing tool. Following are some of the options one can choose from:
Postman:Usedto test the endpoints of your API and pay attention to its responses. Moreover, you can create scripts to test automatically.
Insomnia:It is an alternative to the Postman testing tool but it has the better design IMO.
To create a REST ful for storing users details with Create, Read, Update, Delete functions, execution is must.
Firstly, import Flask, Api, and Resource and set up the Flask-REST ful App using Flask class, __name__ (a special variable in Python Language used to give file a unique name).
After that, create the lists of users with the help of Python data structures.
Now it’s time to create the endpoints of your API with the help of a User resource class. Then Get, Post, Put, Delete functions corresponded to HTTP request method will be executed.
A REST API follows the HTTP method to indicate which method to be performed.
Functions of the Methods:
Get-Used to retrieve the details of a particular user by indicating the name.
Post-In order to create a new user, the post method is used.
Put- For updating or creating details of a particular user.
Delete-In case you need to delete any user’s details.
After executing all the above methods in the resource, we will now add the resource and indicate its route. After that, the Flask Application will be run.
Run Flask Application:It is always useful to run your Flask App in debug mode. As it enables the App to reload without giving any command after the code is updated. Also, it writes an error message alert to the developer. For the development setting, it is considered to be useful but it is suggested not to use it in the production setting.
Once you run your application, immediately start testing it using one of the tools mentioned above.
After going through this article, now you must have an idea on how to create a REST APIusing Python Flask. Ensure that you follow all the necessary standards to design a high-quality REST ful API.If you find this article helpful and useful, please share it with others and stay tuned for more similar content.
Sources:- Pay My Recharge BlogÂ