Return JSON response from Flask view

Question

I have a function that analyzes a CSV file with Pandas and produces a dict with summary information. I want to return the results as a response from a Flask view. How do I return a JSON response?

@app.route("/summary")

def summary():

d = make_summary()

# send it back as json

Answer 1

To return the results as a response from a Flask view you can pass the summary data to the jsonify function, which returns a JSON response.

jsonify():-

This function turns the JSON output into a response object with the application/json mime type. For users convenience, it also converts multiple arguments into an array or multiple keyword arguments into a dictionary. So, it means that if we do jsonify(1,2,3) and jsonify([1,2,3]) both are serialize as [1,2,3]. For that, you will write the following piece of code.

from flask import jsonify

@app.route('/summary')

def summary():

   d = make_summary()

   return jsonify(d)

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