🔌 第9堂課：API 開發入門

API 就是兩個程式之間的溝通介面。REST API 用 HTTP 方法表達操作：

GET    /api/todos      → 取得所有
POST   /api/todos      → 新增
PUT    /api/todos/3    → 更新第 3 筆
DELETE /api/todos/3    → 刪除第 3 筆

# pip install flask
from flask import Flask, jsonify, request

app = Flask(__name__)

@app.route("/api/hello")
def hello():
    name = request.args.get("name", "陌生人")
    return jsonify({"greeting": f"哈囉，{name}！"})

@app.route("/api/echo", methods=["POST"])
def echo():
    data = request.get_json()
    return jsonify({"你傳送了": data})

if __name__ == "__main__":
    app.run(debug=True, port=5000)

from flask import Flask, jsonify, request, abort

app = Flask(__name__)
todos = []; next_id = 1

@app.route("/api/todos", methods=["GET"])
def get_todos():
    return jsonify(todos)

@app.route("/api/todos", methods=["POST"])
def create_todo():
    global next_id
    data = request.get_json()
    todo = {"id": next_id, "title": data["title"], "done": False}
    next_id += 1; todos.append(todo)
    return jsonify(todo), 201

@app.route("/api/todos/", methods=["DELETE"])
def delete_todo(todo_id):
    global todos
    todos = [t for t in todos if t["id"] != todo_id]
    return jsonify({"message": "已刪除"})

# pip install schedule
import schedule, time

def daily_task():
    print("執行每日任務...")

schedule.every().day.at("09:00").do(daily_task)

while True:
    schedule.run_pending()
    time.sleep(30)