SMAmmar

Posted on Nov 23, 2019

Python to React

#opensource #help #react #python

Hello guys
I have performed sentiment analysis in python using Vader library,but now I want to send this data to react front end.
How can I do it ?

Top comments (10)

Manan Joshi • Nov 23 '19

Hello, you might want to set up a python flask API endpoint and make a request to that endpoint from your React app to fetch the data.

SMAmmar • Nov 23 '19

Can't I do it using node.js

Jordy Lee • Nov 23 '19

Why would you write an API in node.js if the sentiment analysis is a python script?

SMAmmar • Nov 23 '19

Cause I want to deploy through MERN stack my application.Also I don't know if sentiment analysis can be done in tensorflow or not

Jordy Lee • Nov 23 '19 • Edited

Ah okay. Not sure if I fully understand your situation, but here's what I suggest:

Write your python sentiment analysis script as a serverless function (e.g. for AWS Lambda). Build an API for the script and call the API endpoint from the React Frontend. The rest of your app can follow the MERN stack.
As far as I understand, you'll have to build an API for the python script no matter what; I don't see how it can communicate with node or react otherwise.
E.g. if your app must absolutely follow the MERN stack, the React layer would read from the node endpoint... Which would itself get data from the Python API. So why not just call the Python API directly?

If you think this is a viable approach, I can share some boilerplate code I use to make serverless python functions on AWS Lambda with API Gateway

SMAmmar • Nov 23 '19

Sure @jordan Lee, It would really help me

Jordy Lee • Nov 23 '19

Sure :) But a heads-up first: please make sure you're willing to spend a bit of time learning AWS Lambda + API gateway and check that it's relevant to your needs. I don't want to accidentally send you down the wrong path if there's a better way to do it.

Anyway, here's the repo: github.com/jkhaui/serverless-pytho...

Use the command npm i serverless -g to install the serverless framework globally.
Clone the repo I sent you and follow instructions. Run serverless offline to edit your Python script locally. Test the API at localhost:4000
If all goes well, use serverless deploy to host it on AWS Lambda. An endpoint URL should also be created automatically through API gateway.

Any questions/problems, let me know. Also, you'll be prompted for your AWS credentials at some point during these steps

Jordy Lee • Nov 23 '19

Oh and btw, you can delete all the Spacy code in handler.py and also delete the directory en_core_web_sm-2.1.0. That's just for demo purposes.

Put your Python script in handler.py. This is the code that will let your script be accessed as an API:

    response = {
        'statusCode': 200,
        'headers': {
            'Content-Type': 'application/json',
            'Access-Control-Allow-Origin': '*',
        },
        'body': json.dumps(entities)
    }

    return response

SMAmmar • Nov 23 '19

sure Jordan, First I will also look into the alternatives. But I highly appreciate the help you provided :).Wish you good luck in your future endeavors.

Jordy Lee • Nov 23 '19

No problem :) Thank you, and best of luck with your app too.

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Python to React

Top comments (10)

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