添加前后端

backend/main.py

@@ -0,0 +1,20 @@
+from fastapi import FastAPI
+import uvicorn
+import random
+
+
+app = FastAPI()
+
+@app.get("/")
+async def root():
+    return {"message": "Hello World"}
+
+
+@app.get("/hello/{name}")
+async def say_hello(name: str):
+    return {"message": f"Hello {name}"}
+
+@app.get("/api/random")
+async def random_number():
+    return {"number": random.randint(1, 100)}
+