docs_src/header_params/tutorial001_py310.py

from fastapi import FastAPI, Header

app = FastAPI()


@app.get("/items/")
async def read_items(user_agent: str | None = Header(default=None)):
    return {"User-Agent": user_agent}
✨ Add docs and tests for Python 3.9 and Python 3.10 (#3712) Co-authored-by: Thomas Grainger <tagrain@gmail.com> 2022-01-07 15:11:31 +01:00			`from fastapi import FastAPI, Header`

			`app = FastAPI()`


			`@app.get("/items/")`
✨ Add support for not needing `...` as default value in required Query(), Path(), Header(), etc. (#4906) * ✨ Do not require default value in Query(), Path(), Header(), etc * 📝 Update source examples for docs with default and required values * ✅ Update tests with new default values and not required Ellipsis * 📝 Update docs for Query params and update info about default value, required, Ellipsis 2022-05-13 18:38:22 -05:00			`async def read_items(user_agent: str \| None = Header(default=None)):`
✨ Add docs and tests for Python 3.9 and Python 3.10 (#3712) Co-authored-by: Thomas Grainger <tagrain@gmail.com> 2022-01-07 15:11:31 +01:00			`return {"User-Agent": user_agent}`