そこで、依存関係には `..` を使った相対インポートを使います:

{* ../../docs_src/bigger_applications/app_an_py310/routers/items.py hl[3] title["app/routers/items.py"] *}

#### 相対インポートの仕組み { #how-relative-imports-work }

/// tip | 豆知識

インポートの仕組みを十分理解している場合は、次の節に進んでください。

///

ドット1つ `.` を使うと、次のような意味になります:

```Python
from .dependencies import get_token_header
```

意味:

	}

	// Make sure we can fit "size" on to the disk without getting above the diskFillFraction
	if available < uint64(size) {
		return false, nil
	}

	// How much will be left after adding the file.
	available -= uint64(size)

	// wantLeft is how much space there at least must be left.
	wantLeft := uint64(float64(total) * (1.0 - diskFillFraction))
	return available > wantLeft, nil

      assertThat(MoreFiles.equal(fooPath, fooCopy)).isFalse();

      // should also assert that a Path that erroneously reports a size 0 can still be compared,
      // not sure how to do that with the Path API
    }
  }

  public void testEqual_links() throws IOException {
    try (FileSystem fs = Jimfs.newFileSystem(Configuration.unix())) {
      Path fooPath = fs.getPath("foo");

  }

  // We use power-of-2 tables, and this is the highest int that's a power of 2
  static final int MAX_TABLE_SIZE = Ints.MAX_POWER_OF_TWO;

  // Represents how tightly we can pack things, as a maximum.
  private static final double DESIRED_LOAD_FACTOR = 0.7;

  // If the set has this many elements, it will "max out" the table size

// Cap returns the capacity of the buffer's underlying byte slice, that is, the
// total space allocated for the buffer's data.
func (b *Buffer) Cap() int { return cap(b.buf) }

// Available returns how many bytes are unused in the buffer.
func (b *Buffer) Available() int { return cap(b.buf) - len(b.buf) }

// Truncate discards all but the first n unread bytes from the buffer
// but continues to use the same allocated storage.

    assertThat(response.body.string()).isEqualTo("Hello response!")
    applicationLogs
      .assertLogEqual("""--> POST $url""")
      .assertLogEqual("""--> END POST (one-shot body omitted)""")
      .assertLogMatch(Regex("""<-- 200 OK $url \(\d+ms\)"""))
      .assertLogEqual("""Content-Length: 15""")
      .assertLogEqual("")
      .assertLogEqual("""Hello response!""")

https://mysuperapp.com/items/
```

/// tip | Tipp

Wenn Sie mehr über HTTPS erfahren möchten, lesen Sie den Leitfaden [Über HTTPS](../deployment/https.md).

///

### Wie Proxy-Forwarded-Header funktionieren { #how-proxy-forwarded-headers-work }

Hier ist eine visuelle Darstellung, wie der **Proxy** weitergeleitete Header zwischen dem Client und dem **Anwendungsserver** hinzufügt:

```mermaid
sequenceDiagram
    participant Client

                }
              }
            }
          }
        }
      }
    }
  }

  @AndroidIncompatible // slow
  @GwtIncompatible // Doubles.tryParse
  public void testTryParseAllCodePoints() {
    // Exercise non-ASCII digit test cases and the like.
    char[] tmp = new char[2];

ntent:"\f1e1"}.fa-share-square:before{content:"\f14d"}.fa-shekel-sign:before{content:"\f20b"}.fa-shield-alt:before{content:"\f3ed"}.fa-ship:before{content:"\f21a"}.fa-shipping-fast:before{content:"\f48b"}.fa-shirtsinbulk:before{content:"\f214"}.fa-shoe-prints:before{content:"\f54b"}.fa-shopping-bag:before{content:"\f290"}.fa-shopping-basket:before{content:"\f291"}.fa-shopping-cart:before{content:"\f07a"}.fa-shopware:before{content:"\f5b5"}.fa-shower:before{content:"\f2cc"}.fa-shuttle-van:before{...

                }
              }
            }
          }
        }
      }
    }
  }

  @AndroidIncompatible // slow
  @GwtIncompatible // Floats.tryParse
  public void testTryParseAllCodePoints() {
    // Exercise non-ASCII digit test cases and the like.
    char[] tmp = new char[2];