Sync fastapi docs from 50fa3f7c on 2026-01-11

docs_src/request_forms/tutorial001_py39.py

@@ -0,0 +1,8 @@
+from fastapi import FastAPI, Form
+
+app = FastAPI()
+
+
+@app.post("/login/")
+async def login(username: str = Form(), password: str = Form()):
+    return {"username": username}