building-restAPI-for-MLmodel-using-flask

To install flask on ubuntu 18.04.3:

1. create a virtual environment on anaconda conda create -n flask_env python=3.7.7
2. activate virtual environment conda activate flask_env
3. install flask conda install flask

If you want to see the version of flask flask --version

The output I get is:

Python 3.7.7
Flask 1.1.2
Werkzeug 1.0.1

Data

The data set can be downloaded from here

Model

Above data is used to train a regression model that predicts NYC Airbnb rental prices/costs.

Training

To train the model run build_model.py.

To Run this app locally:

To get the prediction in web browser:

Assuming you are already in flask_env; go to the directory containing app.py and run below in terminal

python app.py

Now open the web browser and run below URL of the API

http://127.0.0.1:5000/get_prediction?var[]=0&var[]=1&var[]=7192&var[]=5114&var[]=5022&var[]=1532&var[]=40.79851&var[]=-73.94399&var[]=10&var[]=15102&var[]=61&var[]=2&var[]=9&var[]=0.10&var[]=0

var[] contains values of features that are needed by the regression model to predict the price/cost. You will see the output in web browser.

To get the prediction in terminal:

Assuming you are already in flask_env; go to the directory containing app_.py and run below in terminal

python app_.py

Now open another terminal and use HTTPie to make a GET request at the URL of the API

http http://127.0.0.1:5000/ query==[0,1,7192,5114,5022,1532,40.79851,-73.94399,10,15102,61,2,9,0.10,0]

you will see the value of prediction in the terminal as below:

HTTP/1.0 200 OK
Content-Length: 41
Content-Type: application/json
Date: Fri, 29 May 2020 10:52:55 GMT
Server: Werkzeug/1.0.1 Python/3.7.7

{
    "prediction": 163.11757587508328
}

Quick disclaimer: At the time of writing, I am currently Intech Process Automation Employee