If you want to install flask app in your computer for web development using Python you can follow the tutorial.
To start, let’s create a simple “hello world” application. First, create a new project. From the terminal or command line create a new directory:
1. mkdir myflaskwebsite
2. cd myflaskwebsite
Remember, you can change the name of your project as per your requirement.
Inside the project directory, create a virtual environment for the project. You can check virtualenv for more information. First, install virtualenv, create one, activate it, and install Flask:
1. pip install virtualenv
#Create virtualenv linux
2. python3 -m venv venv
#Create virtualenv for windows
3. py -3 -m venv venv
#Activate virualenv linux
4 . venv/bin/activate
#Activate virualenv for windows
5. venv\Scripts\activate
#Install Flask on the enviroment
6. pip install flask
Now create a file main.py in your directory created earlier
from flask import Flask
app = Flask(__name__)
@app.route(‘/’)
def hello():
return “Hello World!”
Now run these commands in terminal or cmd
#Tell the terminal what application to run
export FLASK_APP=main.py
#Tell the terminal what application to run for windows
set FLASK_APP=main.py
#Run the application
flask run
If everything is fine you will be able to see your application on this url
127.0.0.1:5000
You can open this url from any browser.
Now Deploy Flask App to Heroku
Step-9: Deploy your app to heroku
% heroku login
% git init
% heroku git:remote -a my-python-app
% git add.
% git commit -am "First python app"
% git push heroku master
Ankit Srivastava is an IT trainer, technology educator, and digital skills mentor with expertise in programming, data analytics, AI, and software development. He has successfully trained thousands of learners, with more than 10,000 student enrollments on Udemy. His practical teaching approach empowers students and professionals to build in-demand technical skills. Colorstech channel where Ankit posts video tutorials has more than 8000 Subscribers.
