How to deploy Flask App on Heroku.

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud.

Prerequisites

. Python
. pip
. Heroku CLI
. Git

Step:- 1

create a project folder and move to that folder by using the below command

mkdir flask_app
cd flask_app

Step:- 2

create a virtual environment by using the below command and move to that environment.

virtualenv envname
.\medium\Scripts\activate

Step:- 3

create a simple flask app or if you have already created one, use that one.

from flask import Flask

app = Flask(__name__)

@app.route("/")
def Home():
    return "<h1>Hii Reader</h1>"

Step:- 4

create requirement.txt file

pip3 freeze > requirements.txt

Step:- 5

Initialize an empty repo, add the files in the repo and commit all the changes.

git init 
git add .
git commit -m "Initial Commit"

Step:- 6

. Create account on heroku
. install heroku cli
. login to heroku using cli by using command "heroku login"
. create procfile using git bash 
   by using command "echo "web: gunicorn app:app" > Procfile"
. create app on heroku by using command "heroku create app_name"
. finally push your app to heroku remote
   by using command "git push heroku master"

Thank you for reading !!!

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