Create app.py

from fastapi import FastAPI

app = FastAPI()



@app
.get("/")
def greet_json():
return {"Hello": "World!"}

app.py

@@ -0,0 +1,7 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+@app.get("/")
+def greet_json():
+    return {"Hello": "World!"}