python flask install mac code example
Example 1: install flask
pip install flask
Example 2: install flask
pip install -U Flask
Example 3: import flask
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, World!'
Example 4: flask install venv
python -3 -m venv venv
Example 5: how to import flask
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
return "Hello, World!"