{!> ../../docs_src/body_nested_models/tutorial007.py!}
```

////

/// info

请注意 `Offer` 拥有一组 `Item` 而反过来 `Item` 又是一个可选的 `Image` 列表是如何发生的。

///

## 纯列表请求体

如果你期望的 JSON 请求体的最外层是一个 JSON `array`（即 Python `list`），则可以在路径操作函数的参数中声明此类型，就像声明 Pydantic 模型一样：

```Python
images: List[Image]
```

例如：

//// tab | Python 3.9+

```Python hl_lines="13"

--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -391,6 +391,15 @@
 
 #include <bits/wordsize.h>
 
+#if __GNUC_PREREQ (8, 0)
+/* Describes a char array whose address can safely be passed as the first
+   argument to strncpy and strncat, as the char array is not necessarily
+   a NUL-terminated string.  */
+# define __attribute_nonstring__ __attribute__ ((__nonstring__))
+#else
+# define __attribute_nonstring__
+#endif
+

func (db *DB) CreateInBatches(value interface{}, batchSize int) (tx *DB) {
	reflectValue := reflect.Indirect(reflect.ValueOf(value))

	switch reflectValue.Kind() {
	case reflect.Slice, reflect.Array:
		var rowsAffected int64
		tx = db.getInstance()

		// the reflection length judgment of the optimized value
		reflectLen := reflectValue.Len()

		callFc := func(tx *DB) error {

	if err != nil {
		err = msgp.WrapError(err, "Error")
		return
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *DiskInfo) EncodeMsg(en *msgp.Writer) (err error) {
	// array header, size 18
	err = en.Append(0xdc, 0x0, 0x12)
	if err != nil {
		return
	}
	err = en.WriteUint64(z.Total)
	if err != nil {
		err = msgp.WrapError(err, "Total")
		return
	}

 * whitespace.
 *
 * Instances of this class are immutable. Use [Builder] to create instances.
 */
@Suppress("NAME_SHADOWING")
class Headers internal constructor(
  internal val namesAndValues: Array<String>,
) : Iterable<Pair<String, String>> {
  /** Returns the last value corresponding to the specified field, or null. */
  operator fun get(name: String): String? = commonHeadersGet(namesAndValues, name)

  /**

             *
             * This is where we recursively invoke the provided andx smb
             * object to write it's parameter words and bytes to our outgoing
             * array. Incedentally when these andx smbs are created they are not
             * necessarily populated with header data because they're not writing
             * the header, only their body. But for whatever reason one might wish

            throw new AmbiguousException();
        }

        return maximals.getFirst();
    }

    /**
     * Determines which method signature (represented by a class array) is more
     * specific. This defines a partial ordering on the method signatures.
     *
     * @param c1 first signature to compare
     * @param c2 second signature to compare

  public static Closer create() {
    return new Closer(SUPPRESSING_SUPPRESSOR);
  }

  @VisibleForTesting final Suppressor suppressor;

  // only need space for 2 elements in most cases, so try to use the smallest array possible
  private final Deque<Closeable> stack = new ArrayDeque<>(4);
  @CheckForNull private Throwable thrown;

  @VisibleForTesting
  Closer(Suppressor suppressor) {

  /**
   * Parses a bracketed host-port string, throwing IllegalArgumentException if parsing fails.
   *
   * @param hostPortString the full bracketed host-port specification. Port might not be specified.
   * @return an array with 2 strings: host and port, in that order.
   * @throws IllegalArgumentException if parsing the bracketed host-port string fails.
   */
  private static String[] getHostAndPortFromBracketedHost(String hostPortString) {

```

/// info

`**second_user_data` bedeutet:

Nimm die Schlüssel-Wert-Paare des `second_user_data` <abbr title="Dictionary – Wörterbuch: In anderen Programmiersprachen auch Hash, Map, Objekt, Assoziatives Array genannt">Dicts</abbr> und übergib sie direkt als Schlüsselwort-Argumente. Äquivalent zu: `User(id=4, name="Mary", joined="2018-11-30")`.

///

### Editor Unterstützung