What is flask.make_response in Python?

HTTP headers are name or value pairs that appear in the request and response messages of Hypertext Transfer ProtocolHTTP message headers. HTTP headers, through the request and response headers, are used to send extra information between the clients and the server. Some examples of HTTP headers are:

• Authorization
• Accept
• Connection
• Content-type
• Host

At times, full responses might want to be made, but the render_template function only gives the data that was passed through. So, in order to make the view more explicit, the make_response function is used.

It is necessary to add headers in a view and, with this function, it is possible to attach headers and return the response.

This function can be used to convert a function’s return value of a view into a response, which is useful when using view decorators.

A view could look like this:

from flask import render_template

def index():
    return render_template('index.html') 

Upon adding the make_response function, it becomes:

from flask import render_template, make_response

def index():
    response = make_response(render_template('index.html'))
    response.headers['Content-type'] = 'hello world'
    return response