func (d *Decoder) number() (float64, error) {
	d.scratch.reset()

	var (
		c       = d.cur()
		n       float64
		isFloat bool
	)

	// digits first
	switch {
	case c == '0':
		d.scratch.add(c)
		c = d.next()
	case '1' <= c && c <= '9':
		for ; c >= '0' && c <= '9'; c = d.next() {
			n = 10*n + float64(c-'0')
			d.scratch.add(c)
		}
	}

        super(server, 200, 0xFFFF, new netdfs.DfsEnumStruct(), new NdrLong(0));
        this.info.level = this.level;
        this.info.e = new netdfs.DfsEnumArray200();
        this.ptype = 0;
        this.flags = DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG;
    }


    public FileEntry[] getEntries () {
        netdfs.DfsEnumArray200 a200 = (netdfs.DfsEnumArray200) this.info.e;

            bufferIndex = headerStart + andxOffset;

            andx.headerStart = headerStart;
            andx.command = andxCommand;
            andx.errorCode = errorCode;
            andx.flags = flags;
            andx.flags2 = flags2;
            andx.tid = tid;
            andx.pid = pid;
            andx.uid = uid;
            andx.mid = mid;
            andx.useUnicode = useUnicode;

     * 
     * @param authorityServerName
     * @param tc
     * @param flags
     * @return the members of the group
     * @throws IOException
     */
    public jcifs.SID[] getGroupMemberSids ( String authorityServerName, CIFSContext tc, int flags ) throws IOException {
        if ( this.type != SID_TYPE_DOM_GRP && this.type != SID_TYPE_ALIAS )
            return new SID[0];

    }
    DcerpcBind(DcerpcBinding binding, DcerpcHandle handle) {
        this.binding = binding;
        max_xmit = handle.max_xmit;
        max_recv = handle.max_recv;
        ptype = 11;
        flags = DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG;
    }

    public int getOpnum() {
        return 0;
    }
    public void encode_in(NdrBuffer buf) throws NdrException {
        buf.enc_ndr_short(max_xmit);

            return boost.toString();
        }
        return null;
    }

    public void setBoostValue(final String value) {
        if (value != null) {
            try {
                boost = Float.parseFloat(value);
            } catch (final Exception e) {}
        }
    }

    @Override
    public String getConfigId() {
        return ConfigType.WEB.getConfigId(getId());
    }

        }).orElse(new HighlightInfo());
    }

    protected void updateHighlightInfo(final HighlightInfo highlightInfo, final int width) {
        if (width < TABLET_WIDTH) {
            float ratio = (float) width / (float) TABLET_WIDTH;
            if (ratio < 0.5) {
                ratio = 0.5f;
            }
            highlightInfo.fragmentSize((int) (highlightInfo.getFragmentSize() * ratio));
        }
    }

```Python hl_lines="4  9-12  25-27"
from typing import Union

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    price: float
    is_offer: Union[bool, None] = None


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


@app.get("/items/{item_id}")
def read_item(item_id: int, q: Union[str, None] = None):

```Python hl_lines="9  11-12"
{!> ../../docs_src/response_model/tutorial004_py310.py!}
```

////

* `description: Union[str, None] = None` (⚖️ `str | None = None` 🐍 3️⃣.1️⃣0️⃣) ✔️ 🔢 `None`.
* `tax: float = 10.5` ✔️ 🔢 `10.5`.
* `tags: List[str] = []` 🔢 🛁 📇: `[]`.

✋️ 👆 💪 💚 🚫 👫 ⚪️➡️ 🏁 🚥 👫 🚫 🤙 🏪.

🖼, 🚥 👆 ✔️ 🏷 ⏮️ 📚 📦 🔢 ☁ 💽, ✋️ 👆 🚫 💚 📨 📶 📏 🎻 📨 🌕 🔢 💲.

                            "name": "item_id",
                            "in": "path",
                        }
                    ],
                }
            },
            "/path/float/{item_id}": {
                "get": {
                    "responses": {
                        "200": {
                            "description": "Successful Response",