python: Reinstate lazy imports (#21486)

* python: reinstate lazy imports

* python: Update samples

---------

Co-authored-by: Pascal Bachor <bachorp@users.noreply.github.com>

samples/client/echo_api/python/openapi_client/__init__.py

@@ -48,7 +48,49 @@ __all__ = [
     "TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter",
 ]
 
-# import apis into sdk package
+if __import__("typing").TYPE_CHECKING:
+    # import apis into sdk package
+    from openapi_client.api.auth_api import AuthApi as AuthApi
+    from openapi_client.api.body_api import BodyApi as BodyApi
+    from openapi_client.api.form_api import FormApi as FormApi
+    from openapi_client.api.header_api import HeaderApi as HeaderApi
+    from openapi_client.api.path_api import PathApi as PathApi
+    from openapi_client.api.query_api import QueryApi as QueryApi
+    
+    # import ApiClient
+    from openapi_client.api_response import ApiResponse as ApiResponse
+    from openapi_client.api_client import ApiClient as ApiClient
+    from openapi_client.configuration import Configuration as Configuration
+    from openapi_client.exceptions import OpenApiException as OpenApiException
+    from openapi_client.exceptions import ApiTypeError as ApiTypeError
+    from openapi_client.exceptions import ApiValueError as ApiValueError
+    from openapi_client.exceptions import ApiKeyError as ApiKeyError
+    from openapi_client.exceptions import ApiAttributeError as ApiAttributeError
+    from openapi_client.exceptions import ApiException as ApiException
+    
+    # import models into sdk package
+    from openapi_client.models.bird import Bird as Bird
+    from openapi_client.models.category import Category as Category
+    from openapi_client.models.data_query import DataQuery as DataQuery
+    from openapi_client.models.default_value import DefaultValue as DefaultValue
+    from openapi_client.models.number_properties_only import NumberPropertiesOnly as NumberPropertiesOnly
+    from openapi_client.models.pet import Pet as Pet
+    from openapi_client.models.query import Query as Query
+    from openapi_client.models.string_enum_ref import StringEnumRef as StringEnumRef
+    from openapi_client.models.tag import Tag as Tag
+    from openapi_client.models.test_form_object_multipart_request_marker import TestFormObjectMultipartRequestMarker as TestFormObjectMultipartRequestMarker
+    from openapi_client.models.test_query_style_deep_object_explode_true_object_all_of_query_object_parameter import TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter as TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter
+    from openapi_client.models.test_query_style_form_explode_true_array_string_query_object_parameter import TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter as TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+    
+else:
+    from lazy_imports import LazyModule, as_package, load
+
+    load(
+        LazyModule(
+            *as_package(__file__),
+            ("__version__", __version__),
+            ("__all__", __all__),
+            """# import apis into sdk package
 from openapi_client.api.auth_api import AuthApi as AuthApi
 from openapi_client.api.body_api import BodyApi as BodyApi
 from openapi_client.api.form_api import FormApi as FormApi
@@ -80,3 +122,9 @@ from openapi_client.models.tag import Tag as Tag
 from openapi_client.models.test_form_object_multipart_request_marker import TestFormObjectMultipartRequestMarker as TestFormObjectMultipartRequestMarker
 from openapi_client.models.test_query_style_deep_object_explode_true_object_all_of_query_object_parameter import TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter as TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter
 from openapi_client.models.test_query_style_form_explode_true_array_string_query_object_parameter import TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter as TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+
+""",
+            name=__name__,
+            doc=__doc__,
+        )
+    )

samples/client/echo_api/python/openapi_client/api/__init__.py

@@ -1,6 +1,21 @@
 # flake8: noqa
 
-# import apis into api package
+if __import__("typing").TYPE_CHECKING:
+    # import apis into api package
+    from openapi_client.api.auth_api import AuthApi
+    from openapi_client.api.body_api import BodyApi
+    from openapi_client.api.form_api import FormApi
+    from openapi_client.api.header_api import HeaderApi
+    from openapi_client.api.path_api import PathApi
+    from openapi_client.api.query_api import QueryApi
+    
+else:
+    from lazy_imports import LazyModule, as_package, load
+
+    load(
+        LazyModule(
+            *as_package(__file__),
+            """# import apis into api package
 from openapi_client.api.auth_api import AuthApi
 from openapi_client.api.body_api import BodyApi
 from openapi_client.api.form_api import FormApi
@@ -8,3 +23,8 @@ from openapi_client.api.header_api import HeaderApi
 from openapi_client.api.path_api import PathApi
 from openapi_client.api.query_api import QueryApi
 
+""",
+            name=__name__,
+            doc=__doc__,
+        )
+    )

samples/client/echo_api/python/openapi_client/models/__init__.py

@@ -14,7 +14,28 @@
 """  # noqa: E501
 
 
-# import models into model package
+if __import__("typing").TYPE_CHECKING:
+    # import models into model package
+    from openapi_client.models.bird import Bird
+    from openapi_client.models.category import Category
+    from openapi_client.models.data_query import DataQuery
+    from openapi_client.models.default_value import DefaultValue
+    from openapi_client.models.number_properties_only import NumberPropertiesOnly
+    from openapi_client.models.pet import Pet
+    from openapi_client.models.query import Query
+    from openapi_client.models.string_enum_ref import StringEnumRef
+    from openapi_client.models.tag import Tag
+    from openapi_client.models.test_form_object_multipart_request_marker import TestFormObjectMultipartRequestMarker
+    from openapi_client.models.test_query_style_deep_object_explode_true_object_all_of_query_object_parameter import TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter
+    from openapi_client.models.test_query_style_form_explode_true_array_string_query_object_parameter import TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+    
+else:
+    from lazy_imports import LazyModule, as_package, load
+
+    load(
+        LazyModule(
+            *as_package(__file__),
+            """# import models into model package
 from openapi_client.models.bird import Bird
 from openapi_client.models.category import Category
 from openapi_client.models.data_query import DataQuery
@@ -27,3 +48,9 @@ from openapi_client.models.tag import Tag
 from openapi_client.models.test_form_object_multipart_request_marker import TestFormObjectMultipartRequestMarker
 from openapi_client.models.test_query_style_deep_object_explode_true_object_all_of_query_object_parameter import TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter
 from openapi_client.models.test_query_style_form_explode_true_array_string_query_object_parameter import TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
+
+""",
+            name=__name__,
+            doc=__doc__,
+        )
+    )

samples/client/echo_api/python/pyproject.toml

@@ -14,7 +14,8 @@ dependencies = [
   "urllib3 (>=2.1.0,<3.0.0)",
   "python-dateutil (>=2.8.2)",
   "pydantic (>=2)",
-  "typing-extensions (>=4.7.1)"
+  "typing-extensions (>=4.7.1)",
+  "lazy-imports (>=1,<2)"
 ]
 
 [project.urls]

samples/client/echo_api/python/requirements.txt

@@ -2,3 +2,4 @@ urllib3 >= 2.1.0, < 3.0.0
 python_dateutil >= 2.8.2
 pydantic >= 2
 typing-extensions >= 4.7.1
+lazy-imports >= 1, < 2

samples/client/echo_api/python/setup.py

@@ -29,6 +29,7 @@ REQUIRES = [
     "python-dateutil >= 2.8.2",
     "pydantic >= 2",
     "typing-extensions >= 4.7.1",
+    "lazy-imports >= 1, < 2",
 ]
 
 setup(