from fastapi import FastAPI, Form
from pydantic import BaseModel

app = FastAPI()


class FormData(BaseModel):
    username: str
    password: str
    model_config = {"extra": "forbid"}


@app.post("/login/")
async def login(data: Annotated[FormData, Form()]):
    return data
```

    <glob pattern="*.semd"/>
  </mime-type>
  <mime-type type="application/vnd.semf">
    <glob pattern="*.semf"/>
  </mime-type>
  <mime-type type="application/vnd.shana.informed.formdata">
    <glob pattern="*.ifm"/>
  </mime-type>
  <mime-type type="application/vnd.shana.informed.formtemplate">
    <glob pattern="*.itp"/>
  </mime-type>