Connecting Flask with Node.js.

A short tutorial on how to build a connection between Node.js and Flask.

We first need to build the Flask server which will be listening to data sent from Node.js.

We are now running our server on port 5000 on our local machine. Additionally, we have created a simple route that will return a string back when a get request is sent from Node.js to the /flask endpoint.

It’s time to check whether we are successful in getting a response from our Flask server. We can check using Postman which is a tool used to design and test API’s.

We can see that we receive the string “Flask Server”. Hence we are successful in creating the connection.

As discussed above, there are various use-cases where connecting Node.js and Flask is useful. The most common use is when we need to add Machine Learning to our website since it is easier to implement Machine Learning in Python (due to super helpful libraries) and connect it to Node.js using Flask, rather than implementing it all together in Node.js.

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