install flask ubuntu code example

Example 1: install flask on ubuntu

pip3 install Flask

Example 2: install flask on linux mint for python3

pip install Flask

Example 3: Install Flask

pip install flask
Or If The Problem is "pip" not Found Use : 
py -m pip install flask

Example 4: install flask on linux mint for python3

python -m flask --version

Example 5: import flask

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'