安裝 Flask
```bash
pip install Flask
```
建立 Flask
app.py
```py
from flask import Flask, jsonify
app = Flask(__name__)
@app.route('/hello')
def hello():
person = {"name": "Alice", "age": 30, "city": "Taipei"}
return jsonify(person)
if __name__ == '__main__':
app.run()
```
執行 Flask app
```bash
export FLASK_APP=app.py
flask run
```
http://localhost:5000/hello