release: 5.4.1

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "5.4.0"
+  ".": "5.4.1"
 }

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 48
 openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/imagekit-inc%2Fimagekit-70c42eda2bee929830b2537f758400a58dded1f1ef5686a286e2469c35a041a0.yml
 openapi_spec_hash: cdaeed824e91657b45092765cf55eb42
-config_hash: e3c2679d25f6235381dfb11962fbf3d9
+config_hash: 83967503e501e4199b4042d0d0f2b615

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## 5.4.1 (2026-04-17)
+
+Full Changelog: [v5.4.0...v5.4.1](https://github.com/imagekit-developer/imagekit-python/compare/v5.4.0...v5.4.1)
+
+### Performance Improvements
+
+* **client:** optimize file structure copying in multipart requests ([b22ab86](https://github.com/imagekit-developer/imagekit-python/commit/b22ab86e45de2bbc479942eaa27dd0c9b89cbc91))
+
 ## 5.4.0 (2026-04-13)
 
 Full Changelog: [v5.3.0...v5.4.0](https://github.com/imagekit-developer/imagekit-python/compare/v5.3.0...v5.4.0)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "imagekitio"
-version = "5.4.0"
+version = "5.4.1"
 description = "The official Python library for the ImageKit API"
 dynamic = ["readme"]
 license = "Apache-2.0"

src/imagekitio/_files.py

@@ -3,8 +3,8 @@
 import io
 import os
 import pathlib
-from typing import overload
-from typing_extensions import TypeGuard
+from typing import Sequence, cast, overload
+from typing_extensions import TypeVar, TypeGuard
 
 import anyio
 
@@ -17,7 +17,9 @@
     HttpxFileContent,
     HttpxRequestFiles,
 )
-from ._utils import is_tuple_t, is_mapping_t, is_sequence_t
+from ._utils import is_list, is_mapping, is_tuple_t, is_mapping_t, is_sequence_t
+
+_T = TypeVar("_T")
 
 
 def is_base64_file_input(obj: object) -> TypeGuard[Base64FileInput]:
@@ -121,3 +123,51 @@ async def async_read_file_content(file: FileContent) -> HttpxFileContent:
         return await anyio.Path(file).read_bytes()
 
     return file
+
+
+def deepcopy_with_paths(item: _T, paths: Sequence[Sequence[str]]) -> _T:
+    """Copy only the containers along the given paths.
+
+    Used to guard against mutation by extract_files without copying the entire structure.
+    Only dicts and lists that lie on a path are copied; everything else
+    is returned by reference.
+
+    For example, given paths=[["foo", "files", "file"]] and the structure:
+        {
+            "foo": {
+                "bar": {"baz": {}},
+                "files": {"file": <content>}
+            }
+        }
+    The root dict, "foo", and "files" are copied (they lie on the path).
+    "bar" and "baz" are returned by reference (off the path).
+    """
+    return _deepcopy_with_paths(item, paths, 0)
+
+
+def _deepcopy_with_paths(item: _T, paths: Sequence[Sequence[str]], index: int) -> _T:
+    if not paths:
+        return item
+    if is_mapping(item):
+        key_to_paths: dict[str, list[Sequence[str]]] = {}
+        for path in paths:
+            if index < len(path):
+                key_to_paths.setdefault(path[index], []).append(path)
+
+        # if no path continues through this mapping, it won't be mutated and copying it is redundant
+        if not key_to_paths:
+            return item
+
+        result = dict(item)
+        for key, subpaths in key_to_paths.items():
+            if key in result:
+                result[key] = _deepcopy_with_paths(result[key], subpaths, index + 1)
+        return cast(_T, result)
+    if is_list(item):
+        array_paths = [path for path in paths if index < len(path) and path[index] == "<array>"]
+
+        # if no path expects a list here, nothing will be mutated inside it - return by reference
+        if not array_paths:
+            return cast(_T, item)
+        return cast(_T, [_deepcopy_with_paths(entry, array_paths, index + 1) for entry in item])
+    return item

src/imagekitio/_utils/__init__.py

@@ -24,7 +24,6 @@
     coerce_integer as coerce_integer,
     file_from_path as file_from_path,
     strip_not_given as strip_not_given,
-    deepcopy_minimal as deepcopy_minimal,
     get_async_library as get_async_library,
     maybe_coerce_float as maybe_coerce_float,
     get_required_header as get_required_header,

src/imagekitio/_utils/_utils.py

@@ -177,21 +177,6 @@ def is_iterable(obj: object) -> TypeGuard[Iterable[object]]:
     return isinstance(obj, Iterable)
 
 
-def deepcopy_minimal(item: _T) -> _T:
-    """Minimal reimplementation of copy.deepcopy() that will only copy certain object types:
-
-    - mappings, e.g. `dict`
-    - list
-
-    This is done for performance reasons.
-    """
-    if is_mapping(item):
-        return cast(_T, {k: deepcopy_minimal(v) for k, v in item.items()})
-    if is_list(item):
-        return cast(_T, [deepcopy_minimal(entry) for entry in item])
-    return item
-
-
 # copied from https://github.com/Rapptz/RoboDanny
 def human_join(seq: Sequence[str], *, delim: str = ", ", final: str = "or") -> str:
     size = len(seq)

src/imagekitio/_version.py

@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "imagekitio"
-__version__ = "5.4.0"  # x-release-please-version
+__version__ = "5.4.1"  # x-release-please-version

src/imagekitio/resources/beta/v2/files.py

@@ -7,6 +7,7 @@
 
 import httpx
 
+from ...._files import deepcopy_with_paths
 from ...._types import (
     Body,
     Omit,
@@ -18,7 +19,7 @@
     omit,
     not_given,
 )
-from ...._utils import extract_files, maybe_transform, deepcopy_minimal, async_maybe_transform
+from ...._utils import extract_files, maybe_transform, async_maybe_transform
 from ...._compat import cached_property
 from ...._resource import SyncAPIResource, AsyncAPIResource
 from ...._response import (
@@ -248,7 +249,7 @@ def upload(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal(
+        body = deepcopy_with_paths(
             {
                 "file": file,
                 "file_name": file_name,
@@ -270,7 +271,8 @@ def upload(
                 "transformation": transformation,
                 "use_unique_file_name": use_unique_file_name,
                 "webhook_url": webhook_url,
-            }
+            },
+            [["file"]],
         )
         body = serialize_upload_options(body)
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
@@ -503,7 +505,7 @@ async def upload(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal(
+        body = deepcopy_with_paths(
             {
                 "file": file,
                 "file_name": file_name,
@@ -525,7 +527,8 @@ async def upload(
                 "transformation": transformation,
                 "use_unique_file_name": use_unique_file_name,
                 "webhook_url": webhook_url,
-            }
+            },
+            [["file"]],
         )
         body = serialize_upload_options(body)
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])

src/imagekitio/resources/files/files.py

@@ -22,6 +22,7 @@
     file_update_params,
     file_upload_params,
 )
+from ..._files import deepcopy_with_paths
 from ..._types import (
     Body,
     Omit,
@@ -34,7 +35,7 @@
     omit,
     not_given,
 )
-from ..._utils import extract_files, path_template, maybe_transform, deepcopy_minimal, async_maybe_transform
+from ..._utils import extract_files, path_template, maybe_transform, async_maybe_transform
 from .metadata import (
     MetadataResource,
     AsyncMetadataResource,
@@ -700,7 +701,7 @@ def upload(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal(
+        body = deepcopy_with_paths(
             {
                 "file": file,
                 "file_name": file_name,
@@ -725,7 +726,8 @@ def upload(
                 "transformation": transformation,
                 "use_unique_file_name": use_unique_file_name,
                 "webhook_url": webhook_url,
-            }
+            },
+            [["file"]],
         )
         body = serialize_upload_options(body)
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
@@ -1374,7 +1376,7 @@ async def upload(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal(
+        body = deepcopy_with_paths(
             {
                 "file": file,
                 "file_name": file_name,
@@ -1399,7 +1401,8 @@ async def upload(
                 "transformation": transformation,
                 "use_unique_file_name": use_unique_file_name,
                 "webhook_url": webhook_url,
-            }
+            },
+            [["file"]],
         )
         body = serialize_upload_options(body)
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])