how to install flask python code example

Example 1: install flask

pip install flask

Example 2: install flask

pip install -U Flask

Example 3: install flask windows

#Works on Batchfile, Powershell or Bash

pip install flask

Example 4: import flask

from flask import Flask
app = Flask(__name__)

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