How to containerize a simple Rest API using Python Flask

Then a GET call to /product/ should list all the products created. To fetch a specific product, a GET call to /product/ should do the job. Let’s start by creating a project directory and a virtual environment. Post request allows a client to send  data to the server, which will be processed by the server and saved to the database.

Your server will run read_all() when it receives an HTTP request to GET /api/people. The return value of read_all() is a list of dictionaries with information about a person. You import the Flask module, giving the application access to the Flask functionality.

Hashes for flask-rest-api-0.17.1.tar.gz

So far, you’re able to create a new person and get a list with all your people. In this section, you’ll update swagger.yml and people.py to work with a new path that handles a single existing person. The structure for post looks similar to the existing get schema. After all, you need to tell Flask the information that it needs to create a new person.

If the size of the data you are providing is relatively small, you can instead provide a “data dump” in the form of a downloadable JSON, XML, CSV, or SQLite file. Depending on your resources, this approach can be viable up to a download size of a few gigabytes. If you’ve heard the term API before, chances are it’s been used not to refer to APIs in general, but instead to a specific kind of API, the web API. A web API allows for information or functionality to be manipulated by other programs via the internet.

flask-rest-api 0.17.1

The post method obtains request data in JSON format and adds the data to the database. Here we create a ProductView class that defines a get and post function. The get function retrieves the products from the database and paginates the results.

restful api python flask

The commands are slightly different if you use the Windows native version of Python. In recent years REST (REpresentational State Transfer) has emerged as the standard architectural design for web services and web APIs. Flask is a lightweight Python framework that provides a number of features to simplify writing backend APIs for web clients written using different technologies such as React and Angular. For all the self-taught geeks out there, here our content library with most of the learning materials we have produces throughout the years. You can use JSON Formatter to see the output in a well-formatted way.

What Users Want in an API

Including the application name in the URL is useful to provide a namespace that separates this service from others that can be running on the same system. The REST design does not require a specific format for the data provided with the requests. In general data is provided in the request body as a JSON blob, or sometimes as arguments in the query string portion of the URL. You can now create a simple REST API that can handle the four CRUD operations required in any web application.

Can I use Python for REST API?

One of the most popular ways to build APIs is the REST architecture style. Python provides some great tools not only to get data from REST APIs but also to build your own Python REST APIs.

For example, with Twitter’s web API, you can write a program in a language like Python or Javascript that can perform tasks such as favoriting tweets or collecting tweet metadata. With the new folder created, we will open a terminal in the root of the folder so that commands can be executed to build and run our Python project. Once your terminal is pointed to the root directory of your https://remotemode.net/become-a-python-developer/restful-api-design-using-python-flask/ project, run the following commands so you can initialize the Python Rest API Flask project and manage the dependencies. To create the base project, the first thing we will do is create a folder named python-flask-api in your chosen directory. We then create a new task dictionary, using the id of the last task plus one (a cheap way to guarantee unique ids in our simple database).

If the user record exists in the database, the new data that was sent by the client will replace the existing record. The Put request allows us to update or create a record in the database. We will need to retrieve the record from the database before we can update it. It is deleted on deleting, and when you try to get it back again, it will give you NULL. Expects ssl.SSLContext , a tuple in the form (cert_file, pkey_file) , or the string ‘adhoc’ if the server should automatically create the context.

  • RESTful services conventionally use a DELETE verb for the delete endpoint.
  • Computer programs frequently need to communicate amongst themselves or with the underlying operating system, and APIs are one way they do it.
  • The change on this endpoint was the addition of IncomeSchema to load an instance of Income based on the JSON data sent by the user.
  • It is not okay to use this technique on a production web server, for that a proper database setup must be used.
  • Let’s send a get request that will retrieve a single user using the user ID.

Each website uses different types of API, like stock market trading websites integrating with Sensex or Nifty to get a current price and ups-down. Ticket booking apps use a desired single portal API to keep updated data at a familiar interface. In this article, we will build a REST API in Python using the Flask framework. Flask is a popular micro framework for building web applications. Since it is a micro-framework, it is very easy to use and lacks most of the advanced functionality which is found in a full-fledged framework. Most modern web applications are powered by a REST API under the hood.

In short, this code gets a basic web server up and running and makes it respond with a home.html template, which will be served to a browser when navigating to the URL «/». The code is long, but the code is easier to understand, and it is a relatively simple file operation. It seems to have achieved the function we wanted, returned a JSON string. Flask-RESTful provides an extension to Flask for building REST APIs.

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