feat(sdk): add kubeflow_client PipelinesClient (phase 1). Fixes #13380

sdk/python/kfp/kubeflow_client/__init__.py

@@ -0,0 +1,44 @@
+# Copyright 2026 The Kubeflow Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Kubeflow PipelinesClient — simplified, name-first KFP interface.
+
+Can be used directly via ``from kfp.kubeflow_client import PipelinesClient``
+or through the Kubeflow SDK re-export at ``kubeflow.pipelines``.
+"""
+
+from kfp.kubeflow_client import constants
+from kfp.kubeflow_client.pipelines_client import PipelinesBackendConfig
+from kfp.kubeflow_client.pipelines_client import PipelinesClient
+from kfp.kubeflow_client.types import Experiment
+from kfp.kubeflow_client.types import ListExperimentsResponse
+from kfp.kubeflow_client.types import ListPipelinesResponse
+from kfp.kubeflow_client.types import ListPipelineVersionsResponse
+from kfp.kubeflow_client.types import ListRunsResponse
+from kfp.kubeflow_client.types import Pipeline
+from kfp.kubeflow_client.types import PipelineVersion
+from kfp.kubeflow_client.types import Run
+
+__all__ = [
+    'constants',
+    'Experiment',
+    'ListExperimentsResponse',
+    'ListPipelinesResponse',
+    'ListPipelineVersionsResponse',
+    'ListRunsResponse',
+    'Pipeline',
+    'PipelinesBackendConfig',
+    'PipelinesClient',
+    'PipelineVersion',
+    'Run',
+]

sdk/python/kfp/kubeflow_client/constants.py

@@ -0,0 +1,48 @@
+# Copyright 2026 The Kubeflow Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Run state constants for PipelinesClient."""
+
+__all__ = [
+    'RUN_SUCCEEDED',
+    'RUN_FAILED',
+    'RUN_SKIPPED',
+    'RUN_ERROR',
+    'RUN_CANCELED',
+    'RUN_CANCELING',
+    'RUN_RUNNING',
+    'RUN_PENDING',
+    'RUN_PAUSED',
+    'RUN_COMPLETE',
+    'TERMINAL_STATES',
+]
+
+RUN_SUCCEEDED = 'succeeded'
+RUN_FAILED = 'failed'
+RUN_SKIPPED = 'skipped'
+RUN_ERROR = 'error'
+RUN_CANCELED = 'canceled'
+RUN_CANCELING = 'canceling'
+RUN_RUNNING = 'running'
+RUN_PENDING = 'pending'
+RUN_PAUSED = 'paused'
+
+RUN_COMPLETE = RUN_SUCCEEDED
+
+TERMINAL_STATES = frozenset({
+    RUN_SUCCEEDED,
+    RUN_FAILED,
+    RUN_SKIPPED,
+    RUN_ERROR,
+    RUN_CANCELED,
+})