Flask route as API endpoint - Mini Project: Build & Apply

Flask route as API endpoint

📖 Scenario: You are building a simple web service that provides information about fruits. This service will have an API endpoint that returns fruit data in JSON format.

🎯 Goal: Create a Flask application with a route /api/fruits that returns a JSON response containing a list of fruits and their colors.

📋 What You'll Learn

Create a dictionary called fruits with fruit names as keys and their colors as values

Create a Flask app instance named app

Define a route /api/fruits using the @app.route decorator

Return the fruits dictionary as a JSON response using jsonify

💡 Why This Matters

🌍 Real World

APIs like this let apps and websites get data from servers in a simple, standard way.

💼 Career

Knowing how to create API endpoints with Flask is useful for backend web development jobs.

1

Create the fruit data dictionary

Create a dictionary called fruits with these exact entries: 'apple': 'red', 'banana': 'yellow', and 'grape': 'purple'.

Flask

# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys and values.

2

Create the Flask app instance

Import Flask from flask and create a Flask app instance called app.

Flask

fruits = {'apple': 'red', 'banana': 'yellow', 'grape': 'purple'}
# Your code here

Need a hint?

Use app = Flask(__name__) to create the app instance.

3

Define the API route

Use the @app.route decorator with the path /api/fruits to define a function called get_fruits.

Flask

from flask import Flask

fruits = {'apple': 'red', 'banana': 'yellow', 'grape': 'purple'}

app = Flask(__name__)

# Your code here

Need a hint?

Use @app.route('/api/fruits') above the function definition.

4

Return JSON response with fruit data

Import jsonify from flask and return jsonify(fruits) inside the get_fruits function.

Flask

from flask import Flask

fruits = {'apple': 'red', 'banana': 'yellow', 'grape': 'purple'}

app = Flask(__name__)

@app.route('/api/fruits')
def get_fruits():
    # Your code here

Need a hint?

Use return jsonify(fruits) to send the dictionary as JSON.