Maar helaas krijg je niets bruikbaars:

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

### Types toevoegen

Laten we een enkele regel uit de vorige versie aanpassen.

We zullen precies dit fragment, de parameters van de functie, wijzigen van:

```Python
    first_name, last_name
```

naar:

```Python
    first_name: str, last_name: str
```

Dat is alles.

   * @return an immutable {@link Collection} containing all the different permutations of the
   *     original iterable.
   * @throws NullPointerException If the specified iterable is null, has any null elements, or if
   *     the specified comparator is null.
   * @since 12.0
   */
  public static <E> Collection<List<E>> orderedPermutations(
      Iterable<E> elements, Comparator<? super E> comparator) {

   */
  /*
   * By declaring <T> instead of <T extends @Nullable Object>, we declare this method as requiring a
   * stream whose elements are non-null. However, the method goes out of its way to still handle
   * nulls in the stream. This means that the method can safely be used with a stream that contains
   * nulls as long as the *last* element is *not* null.
   *

In Python 3.10 there's also a **new syntax** where you can put the possible types separated by a <abbr title='also called "bitwise or operator", but that meaning is not relevant here'>vertical bar (`|`)</abbr>.

    embed_body_fields: bool,
) -> Tuple[Dict[str, Any], List[Dict[str, Any]]]:
    values: Dict[str, Any] = {}
    errors: List[Dict[str, Any]] = []
    assert body_fields, "request_body_to_args() should be called with fields"
    single_not_embedded_field = len(body_fields) == 1 and not embed_body_fields
    first_field = body_fields[0]
    body_to_process = received_body

    fields_to_extract: List[ModelField] = body_fields

   *     for the keys
   */
  @CanIgnoreReturnValue
  @CheckForNull
  public V erase(@CheckForNull Object rowKey, @CheckForNull Object columnKey) {
    Integer rowIndex = rowKeyToIndex.get(rowKey);
    Integer columnIndex = columnKeyToIndex.get(columnKey);
    if (rowIndex == null || columnIndex == null) {
      return null;
    }

  // Example: when this is set to 30%, the new ReplicaSet can be scaled up immediately when
  // the rolling update starts, such that the total number of old and new pods do not exceed
  // 130% of desired pods. Once old pods have been killed,
  // new ReplicaSet can be scaled up further, ensuring that total number of pods running
  // at any time during the update is at most 130% of desired pods.
  // +optional

 *     .trimResults()
 *     .omitEmptyStrings();
 * }</pre>
 *
 * <p>Now {@code MY_SPLITTER.split("foo,,, bar ,")} returns just {@code ["foo", "bar"]}. Note that
 * the order in which these configuration methods are called is never significant.
 *
 * <p><b>Warning:</b> Splitter instances are immutable. Invoking a configuration method has no
 * effect on the receiving instance; you must store and use the new splitter instance it returns
 * instead.

	}
	switch op {
	case opIs:
		if a.IsNull() {
			// Missing is null
			return v.IsNull() || v.IsMissing(), nil
		}
		if a.IsMissing() {
			return v.IsMissing(), nil
		}
		// Forward to Equal
		op = opEq
	case opIsNot:
		if a.IsNull() {
			// Missing is not null
			return !v.IsNull() && !v.IsMissing(), nil
		}
		if a.IsMissing() {
			return !v.IsMissing(), nil

type fileWriter interface {
	io.Writer
	fileState

	ReadFrom(io.Reader) (int64, error)
}

// Flush finishes writing the current file's block padding.
// The current file must be fully written before Flush can be called.
//
// This is unnecessary as the next call to [Writer.WriteHeader] or [Writer.Close]
// will implicitly flush out the file's padding.
func (tw *Writer) Flush() error {
	if tw.err != nil {
		return tw.err
	}