Update app.py

app.py

@@ -12,3 +12,14 @@ def get_products():
     with open("products.json", "r") as file:
         products = json.load(file)
     return products
+
+@app.get("/products/{productid}")
+def get_product(productid:str):
+    with open("products.json", "r") as file:
+        products = json.load(file)
+	
+	for product in products:
+		if product["productid"] == productid:
+			return product
+	
+    return {"error": "Product not found"}