Тоді ви спробуєте давнього друга програміста - автозаповнення редактора коду.

Ви надрукуєте перший параметр функції, `first_name`, тоді крапку (`.`), а тоді натиснете `Ctrl+Space`, щоб запустити автозаповнення.

Але, на жаль, ви не отримаєте нічого корисного:

<img src="/img/python-types/image01.png">

### Додайте типи

Давайте змінимо один рядок з попередньої версії.

现在假设你将从头开始编写这段程序。

在某一时刻，你开始定义函数，并且准备好了参数...。

现在你需要调用一个"将第一个字母转换为大写形式的方法"。

等等，那个方法是什么来着？`upper`？还是 `uppercase`？`first_uppercase`？`capitalize`？

然后你尝试向程序员老手的朋友——编辑器自动补全寻求帮助。

输入函数的第一个参数 `first_name`，输入点号（`.`）然后敲下 `Ctrl+Space` 来触发代码补全。

但遗憾的是并没有起什么作用：

<img src="https://fastapi.tiangolo.com/img/python-types/image01.png">

### 添加类型

让我们来修改上面例子的一行代码。

我们将把下面这段代码中的函数参数从：

```Python
    first_name, last_name
```

            : ImmutableSet.copyOf(ImmutableList.sortedCopyOf(columnComparator, columnSpaceBuilder));

    return forOrderedComponents(cellList, rowSpace, columnSpace);
  }

  /** A factory that chooses the most space-efficient representation of the table. */
  static <R, C, V> RegularImmutableTable<R, C, V> forOrderedComponents(
      ImmutableList<Cell<R, C, V>> cellList,
      ImmutableSet<R> rowSpace,

        from = partitionPoint + 1;
      }
    }
  }

  /**
   * Performs a partition operation on the slice of {@code array} with elements in the range [{@code
   * from}, {@code to}]. Uses the median of {@code from}, {@code to}, and the midpoint between them
   * as a pivot. Returns the index which the slice is partitioned around, i.e. if it returns {@code

Menlo, Monaco, Consolas, \"Liberation Mono\", \"Courier New\", monospace !important;\n}\n\n.text-justify {\n  text-align: justify !important;\n}\n\n.text-wrap {\n  white-space: normal !important;\n}\n\n.text-nowrap {\n  white-space: nowrap !important;\n}\n\n.text-truncate {\n  overflow: hidden;\n  text-overflow: ellipsis;\n  white-space: nowrap;\n}\n\n.text-left {\n  text-align: left !important;\n}\n\n.text-right {\n  text-align: right !important;\n}\n\n.text-center {\n  text-align: center !important;\n}\n\n@media...

    private static final byte[] APPLABEL_300 = toCBytes("SMB2APP");
    private static final byte[] APPLABEL_311 = toCBytes("SMBAppKey");

    private static final byte[] ENCCONTEXT_300 = toCBytes("ServerIn "); // there really is a space there
    private static final byte[] ENCLABEL_300 = toCBytes("SMB2AESCCM");
    private static final byte[] ENCLABEL_311 = toCBytes("SMB2C2SCipherKey");

    private static final byte[] DECCONTEXT_300 = toCBytes("ServerOut");

 * control. Under low update contention, the two classes have similar characteristics. But under
 * high contention, expected throughput of this class is significantly higher, at the expense of
 * higher space consumption.
 *
 * <p>This class extends {@link Number}, but does not define methods such as {@code
 * equals}, {@code hashCode} and {@code compareTo} because instances are expected to be mutated, and

    int chunk2 = dataSize - chunk1;

    // Write just enough to not trip the threshold
    if (chunk1 > 0) {
      write(out, data, 0, chunk1, singleByte);
      assertTrue(ByteSource.wrap(data).slice(0, chunk1).contentEquals(source));
    }
    File file = out.getFile();
    assertThat(file).isNull();

    // Write data to go over the threshold
    if (chunk2 > 0) {

이때 "첫 글자를 대문자로 바꾸는 함수"를 호출해야 합니다.

`upper`였나? 아니면 `uppercase`? `first_uppercase`? `capitalize`?

그때 개발자들의 오랜 친구, 에디터 자동완성을 시도해봅니다.

당신은 `first_name`를 입력한 뒤 점(`.`)을 입력하고 자동완성을 켜기 위해서 `Ctrl+Space`를 눌렀습니다.

하지만 슬프게도 아무런 도움이 되지 않습니다:

<img src="/img/python-types/image01.png">

### 타입 추가하기

이전 버전에서 한 줄만 수정해봅시다.

저희는 이 함수의 매개변수 부분:

```Python
    first_name, last_name
```

  #   Needed for removing poorly interpreted newline sequences when running in more
  #   exotic environments such as mingw bash on Windows.
  printf "%s" "${1}" | tr -d '[:space:]'
}

# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
while IFS="=" read -r key value; do
  case "${key-}" in