_serialize_multipartform() — anthropic-sdk-python Function Reference

Architecture documentation for the _serialize_multipartform() function in _base_client.py from the anthropic-sdk-python codebase.

Function python AnthropicClient SyncAPI calls 2 called by 1

Entity Profile

AnthropicClient→ SyncAPI→ _serialize_multipartform() — anthropic-sdk-python Function Reference

Dependency Diagram

graph TD
  0a2c9ce8_a659_23ba_622c_074027fb8d75["_serialize_multipartform()"]
  842ce0be_ea56_b939_960f_13eb61230daf["BaseClient"]
  0a2c9ce8_a659_23ba_622c_074027fb8d75 -->|defined in| 842ce0be_ea56_b939_960f_13eb61230daf
  c1255cc8_bc9d_85e2_d7e7_d99e63ebb389["_build_request()"]
  c1255cc8_bc9d_85e2_d7e7_d99e63ebb389 -->|calls| 0a2c9ce8_a659_23ba_622c_074027fb8d75
  a4465198_32b8_125c_a12b_a1f3510b8955["stringify_items()"]
  0a2c9ce8_a659_23ba_622c_074027fb8d75 -->|calls| a4465198_32b8_125c_a12b_a1f3510b8955
  afc80c40_7ec9_e8a7_8063_f2ab74bc2ee7["get()"]
  0a2c9ce8_a659_23ba_622c_074027fb8d75 -->|calls| afc80c40_7ec9_e8a7_8063_f2ab74bc2ee7
  style 0a2c9ce8_a659_23ba_622c_074027fb8d75 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/anthropic/_base_client.py lines 594–622

    def _serialize_multipartform(self, data: Mapping[object, object]) -> dict[str, object]:
        items = self.qs.stringify_items(
            # TODO: type ignore is required as stringify_items is well typed but we can't be
            # well typed without heavy validation.
            data,  # type: ignore
            array_format="brackets",
        )
        serialized: dict[str, object] = {}
        for key, value in items:
            existing = serialized.get(key)

            if not existing:
                serialized[key] = value
                continue

            # If a value has already been set for this key then that
            # means we're sending data like `array[]=[1, 2, 3]` and we
            # need to tell httpx that we want to send multiple values with
            # the same key which is done by using a list or a tuple.
            #
            # Note: 2d arrays should never result in the same key at both
            # levels so it's safe to assume that if the value is a list,
            # it was because we changed it to be a list.
            if is_list(existing):
                existing.append(value)
            else:
                serialized[key] = [existing, value]

        return serialized