```Python hl_lines="5-10  16  21" title="app/routers/items.py"
{!../../docs_src/bigger_applications/app/routers/items.py!}
```

由于每个*路径操作*的路径都必须以 `/` 开头，例如：

```Python hl_lines="1"
@router.get("/{item_id}")
async def read_item(item_id: str):
    ...
```

...前缀不能以 `/` 作为结尾。

因此，本例中的前缀为 `/items`。

我们还可以添加一个 `tags` 列表和额外的 `responses` 列表，这些参数将应用于此路由器中包含的所有*路径操作*。

    TFE_Context* ctx, int keep_alive_secs, const void* proto, size_t proto_len,
    int64_t init_timeout_in_ms, TF_Status* status,
    bool clear_existing_contexts);

// Set server def with retries and timeout. This is helpful for fault-tolerant
// initial connection in high-preemption environments, such as
// ParameterServerStrategy training.
// This API is for experimental usage and may be subject to change.

```Python
response = requests.get("http://example.com/some/url")
```

Die entsprechende *Pfadoperation* der FastAPI-API könnte wie folgt aussehen:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
    return {"message": "Hello World"}
```

Sehen Sie sich die Ähnlichkeiten in `requests.get(...)` und `@app.get(...)` an.

/// check | "Inspirierte **FastAPI**"

* `main.py` ファイルを作成します：

```Python
from typing import Union

from fastapi import FastAPI

app = FastAPI()


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


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

### Dockerfile

同じプロジェクト・ディレクトリに`Dockerfile`というファイルを作成します：

      feed3, control_inputs, TF_OperationNumControlInputs(feed3));
  ASSERT_EQ(2, num_control_inputs);
  EXPECT_EQ(feed, control_inputs[0]);
  EXPECT_EQ(feed2, control_inputs[1]);

  // Export to a graph def so we can import a graph with control dependencies
  TF_DeleteBuffer(graph_def);
  graph_def = TF_NewBuffer();
  TF_GraphToGraphDef(graph, graph_def, s);
  ASSERT_EQ(TF_OK, TF_GetCode(s)) << TF_Message(s);

				if !ok {
					continue
				}
				if ts.Name.Name == t.Name {
					return p.hasPointer(f, ts.Type, top)
				}
			}
		}
		if def := typedef[t.Name]; def != nil {
			return p.hasPointer(f, def.Go, top)
		}
		if t.Name == "string" {
			return !top
		}
		if t.Name == "error" {
			return true
		}
		if goTypes[t.Name] != nil {
			return false
		}

	switch word {
	case "TEXT":
		// Defines text symbol in operands[0].
		if len(operands) > 0 {
			p.start(operands[0])
			if name, abi, ok := p.funcAddress(); ok {
				fmt.Fprintf(w, "def %s %s\n", name, abi)
			}
		}
		return
	case "GLOBL", "PCDATA":
		// No text definitions or symbol references.
	case "DATA", "FUNCDATA":
		// For DATA, operands[0] is defined symbol.

pkg go/types, type Func struct
pkg go/types, type Importer interface { Import }
pkg go/types, type Importer interface, Import(string) (*Package, error)
pkg go/types, type Info struct
pkg go/types, type Info struct, Defs map[*ast.Ident]Object
pkg go/types, type Info struct, Implicits map[ast.Node]Object
pkg go/types, type Info struct, InitOrder []*Initializer
pkg go/types, type Info struct, Scopes map[ast.Node]*Scope

// Fetches any input mappings requested via
// TF_ImportGraphDefOptionsAddInputMapping() that didn't appear in the GraphDef
// and weren't used as input to any node in the imported graph def. The number
// of fetched mappings is returned in `num_missing_unused_input_mappings`. The
// array of each mapping's source node name is returned in `src_names`, and the

    val k1Creator = cache.edit("k1")!!
    k1Creator.setString(0, "AB")
    k1Creator.setString(1, "C")
    k1Creator.commit()
    val k2Creator = cache.edit("k2")!!
    k2Creator.setString(0, "DEF")
    k2Creator.setString(1, "G")
    k2Creator.commit()
    val k1Snapshot = cache["k1"]!!
    k1Snapshot.close()
    cache.close()