[python] add supportHttpxSync option for sync httpx methods by wing328 · Pull Request #24128 · OpenAPITools/openapi-generator

wing328 · 2026-06-25T07:31:02Z

based on #23032 with updated samples, workflows, test files

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Summary by cubic

Adds synchronous method generation for Python httpx via a new supportHttpxSync option, creating _sync variants that call their async counterparts and block on a shared background event loop.

New Features
- Generate _sync, _sync_with_http_info, _sync_without_preload_content for httpx only; ignored with a warning for other libraries.
- New httpx/sync_helper.mustache with run_sync() using a dedicated, reused loop so httpx.AsyncClient stays on one loop.
- Updated templates (api.mustache, api_doc.mustache, api_test.mustache) and docs; added petstore python-httpx-sync sample, copied tests, and updated CI to run samples/openapi3/client/petstore/python-httpx-sync.

^{Written for commit a436bdd. Summary will update on new commits.}

Add a new `supportHttpxSync` option to the Python generator (httpx library only) that generates synchronous `_sync` variants of each API method inside the same API class, instead of a separate `httpx-sync` library. Following the maintainer's review feedback on #23044, each generated `_sync` method simply calls its asynchronous counterpart and waits for completion, so both synchronous and asynchronous methods are available from the same SDK (matching the sync/async layout already used by other generators). - PythonClientCodegen: new `supportHttpxSync` CLI option, wired for the httpx library only (ignored with a warning otherwise) - httpx/sync_helper.mustache: `run_sync()` helper running coroutines to completion on a dedicated, reused background event loop so the httpx AsyncClient stays bound to a single loop across calls - api.mustache: generate `_sync`, `_sync_with_http_info` and `_sync_without_preload_content` variants under `{{#supportHttpxSync}}` - api_doc / api_test: document and stub the sync variants - new sample petstore python-httpx-sync (bin/configs/python-httpx-sync.yaml) - docs/generators/python.md regenerated

Fix FILES

…acies/openapi-generator into LeComptoirDesPharmacies-feature/23032

cubic-dev-ai

16 issues found across 406 files

Prompt for AI agents (unresolved issues)


Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/AllOfWithSingleRef.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/AllOfWithSingleRef.md:21">
P1: Example code calls `AllOfWithSingleRef.to_json()` as a class/static method, but `to_json` is an instance method. This raises TypeError at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/CreatureInfo.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/CreatureInfo.md:20">
P1: Documentation example calls `CreatureInfo.to_json()` as a class method, but `to_json()` is an instance method. This would raise a TypeError at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/Cat.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/Cat.md:20">
P1: Example code calls `Cat.to_json()` (class-method style) but `to_json()` is an instance method — should be `cat_instance.to_json()` using the already-created instance.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/Creature.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/Creature.md:21">
P1: `Creature.to_json()` calls an instance method via the class — will raise TypeError. Should use `creature_instance.to_json()` instead.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/CircularReferenceModel.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/CircularReferenceModel.md:21">
P2: `CircularReferenceModel.to_json()` called as class method but `to_json()` is an instance method — should be `circular_reference_model_instance.to_json()`.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/Color.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/Color.md:20">
P1: `to_json()` is an instance method but called as a class method (`Color.to_json()`). Should be `color_instance.to_json()` as shown in the variable assignment above.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/AdditionalPropertiesAnyType.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/AdditionalPropertiesAnyType.md:20">
P1: Calling instance method `to_json()` on the class instead of the instance variable raises TypeError at runtime. Use `additional_properties_any_type_instance.to_json()`.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/CircularAllOfRef.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/CircularAllOfRef.md:21">
P1: Example code calls `to_json()` on the class instead of the instance. `to_json()` is an instance method; calling it as `CircularAllOfRef.to_json()` raises `TypeError: missing 1 required positional argument: 'self'`. Use `circular_all_of_ref_instance.to_json()` instead.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/ClassModel.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/ClassModel.md:21">
P1: `ClassModel.to_json()` calls an instance method on the class, missing the `self` argument. Will raise `TypeError` at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfArrayOfModel.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfArrayOfModel.md:20">
P1: Example code calls `ArrayOfArrayOfModel.to_json()` on the class, but `to_json()` is an instance method and will raise `TypeError: missing 1 required positional argument: 'self'`</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/Animal.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/Animal.md:21">
P1: Instance method `to_json()` called on class `Animal` instead of on the `animal_instance` variable created two lines above. This will raise a TypeError at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/BaseDiscriminator.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/BaseDiscriminator.md:20">
P1: `BaseDiscriminator.to_json()` calls instance method `to_json(self)` on the class. Should be `base_discriminator_instance.to_json()` using the instance created above.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfArrayOfNumberOnly.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfArrayOfNumberOnly.md:20">
P2: Example code calls `ArrayOfArrayOfNumberOnly.to_json()` as a class method, but `to_json` is an instance method — will raise TypeError at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/Bathing.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/Bathing.md:22">
P0: Call `Bathing.to_json()` on the class but `to_json` is an instance method. This will raise `TypeError: Bathing.to_json() missing 1 required positional argument: 'self'` at runtime.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfNumberOnly.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfNumberOnly.md:20">
P1: Calls `ArrayOfNumberOnly.to_json()` on the class, but `to_json()` is an instance method. At runtime this raises TypeError: missing 1 required positional argument 'self'. Should use the instance `array_of_number_only_instance` instead.</violation>
</file>

<file name="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfMapModel.md">

<violation number="1" location="samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfMapModel.md:20">
P2: `ArrayOfMapModel.to_json()` calls an instance method on the class, not an instance. `to_json(self)` expects `self`, so this raises `TypeError: ArrayOfMapModel.to_json() missing 1 required positional argument: 'self'` at runtime.</violation>
</file>

_{Note: This PR contains a large number of files. cubic only reviews up to 40 files per PR, so some files may not have been reviewed. cubic prioritizes the most important files to review.

On a pro plan you can use ultrareview for larger PRs.

Re-trigger cubic}

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of Bathing from a JSON string
+bathing_instance = Bathing.from_json(json)
+# print the JSON string representation of the object
+print(Bathing.to_json())


P0: Call Bathing.to_json() on the class but to_json is an instance method. This will raise TypeError: Bathing.to_json() missing 1 required positional argument: 'self' at runtime.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/Bathing.md, line 22: <comment>Call `Bathing.to_json()` on the class but `to_json` is an instance method. This will raise `TypeError: Bathing.to_json() missing 1 required positional argument: 'self'` at runtime.</comment> <file context> @@ -0,0 +1,31 @@ +# create an instance of Bathing from a JSON string +bathing_instance = Bathing.from_json(json) +# print the JSON string representation of the object +print(Bathing.to_json()) + +# convert the object into a dict </file context>

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of AllOfWithSingleRef from a JSON string
+all_of_with_single_ref_instance = AllOfWithSingleRef.from_json(json)
+# print the JSON string representation of the object
+print(AllOfWithSingleRef.to_json())


P1: Example code calls AllOfWithSingleRef.to_json() as a class/static method, but to_json is an instance method. This raises TypeError at runtime.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/AllOfWithSingleRef.md, line 21: <comment>Example code calls `AllOfWithSingleRef.to_json()` as a class/static method, but `to_json` is an instance method. This raises TypeError at runtime.</comment> <file context> @@ -0,0 +1,30 @@ +# create an instance of AllOfWithSingleRef from a JSON string +all_of_with_single_ref_instance = AllOfWithSingleRef.from_json(json) +# print the JSON string representation of the object +print(AllOfWithSingleRef.to_json()) + +# convert the object into a dict </file context>

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of CreatureInfo from a JSON string
+creature_info_instance = CreatureInfo.from_json(json)
+# print the JSON string representation of the object
+print(CreatureInfo.to_json())


P1: Documentation example calls CreatureInfo.to_json() as a class method, but to_json() is an instance method. This would raise a TypeError at runtime.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/CreatureInfo.md, line 20: <comment>Documentation example calls `CreatureInfo.to_json()` as a class method, but `to_json()` is an instance method. This would raise a TypeError at runtime.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of CreatureInfo from a JSON string +creature_info_instance = CreatureInfo.from_json(json) +# print the JSON string representation of the object +print(CreatureInfo.to_json()) + +# convert the object into a dict </file context>

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of Cat from a JSON string
+cat_instance = Cat.from_json(json)
+# print the JSON string representation of the object
+print(Cat.to_json())


P1: Example code calls Cat.to_json() (class-method style) but to_json() is an instance method — should be cat_instance.to_json() using the already-created instance.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/Cat.md, line 20: <comment>Example code calls `Cat.to_json()` (class-method style) but `to_json()` is an instance method — should be `cat_instance.to_json()` using the already-created instance.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of Cat from a JSON string +cat_instance = Cat.from_json(json) +# print the JSON string representation of the object +print(Cat.to_json()) + +# convert the object into a dict </file context>

Suggested change

print(Cat.to_json())

print(cat_instance.to_json())

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of Creature from a JSON string
+creature_instance = Creature.from_json(json)
+# print the JSON string representation of the object
+print(Creature.to_json())


P1: Creature.to_json() calls an instance method via the class — will raise TypeError. Should use creature_instance.to_json() instead.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/Creature.md, line 21: <comment>`Creature.to_json()` calls an instance method via the class — will raise TypeError. Should use `creature_instance.to_json()` instead.</comment> <file context> @@ -0,0 +1,30 @@ +# create an instance of Creature from a JSON string +creature_instance = Creature.from_json(json) +# print the JSON string representation of the object +print(Creature.to_json()) + +# convert the object into a dict </file context>

Suggested change

print(Creature.to_json())

print(creature_instance.to_json())

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of BaseDiscriminator from a JSON string
+base_discriminator_instance = BaseDiscriminator.from_json(json)
+# print the JSON string representation of the object
+print(BaseDiscriminator.to_json())


P1: BaseDiscriminator.to_json() calls instance method to_json(self) on the class. Should be base_discriminator_instance.to_json() using the instance created above.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/BaseDiscriminator.md, line 20: <comment>`BaseDiscriminator.to_json()` calls instance method `to_json(self)` on the class. Should be `base_discriminator_instance.to_json()` using the instance created above.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of BaseDiscriminator from a JSON string +base_discriminator_instance = BaseDiscriminator.from_json(json) +# print the JSON string representation of the object +print(BaseDiscriminator.to_json()) + +# convert the object into a dict </file context>

Suggested change

print(BaseDiscriminator.to_json())

print(base_discriminator_instance.to_json())

cubic-dev-ai · 2026-06-25T11:22:51Z

+# create an instance of ArrayOfNumberOnly from a JSON string
+array_of_number_only_instance = ArrayOfNumberOnly.from_json(json)
+# print the JSON string representation of the object
+print(ArrayOfNumberOnly.to_json())


P1: Calls ArrayOfNumberOnly.to_json() on the class, but to_json() is an instance method. At runtime this raises TypeError: missing 1 required positional argument 'self'. Should use the instance array_of_number_only_instance instead.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfNumberOnly.md, line 20: <comment>Calls `ArrayOfNumberOnly.to_json()` on the class, but `to_json()` is an instance method. At runtime this raises TypeError: missing 1 required positional argument 'self'. Should use the instance `array_of_number_only_instance` instead.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of ArrayOfNumberOnly from a JSON string +array_of_number_only_instance = ArrayOfNumberOnly.from_json(json) +# print the JSON string representation of the object +print(ArrayOfNumberOnly.to_json()) + +# convert the object into a dict </file context>

Suggested change

print(ArrayOfNumberOnly.to_json())

print(array_of_number_only_instance.to_json())

cubic-dev-ai · 2026-06-25T11:22:52Z

+# create an instance of CircularReferenceModel from a JSON string
+circular_reference_model_instance = CircularReferenceModel.from_json(json)
+# print the JSON string representation of the object
+print(CircularReferenceModel.to_json())


P2: CircularReferenceModel.to_json() called as class method but to_json() is an instance method — should be circular_reference_model_instance.to_json().

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/CircularReferenceModel.md, line 21: <comment>`CircularReferenceModel.to_json()` called as class method but `to_json()` is an instance method — should be `circular_reference_model_instance.to_json()`.</comment> <file context> @@ -0,0 +1,30 @@ +# create an instance of CircularReferenceModel from a JSON string +circular_reference_model_instance = CircularReferenceModel.from_json(json) +# print the JSON string representation of the object +print(CircularReferenceModel.to_json()) + +# convert the object into a dict </file context>

Suggested change

print(CircularReferenceModel.to_json())

print(circular_reference_model_instance.to_json())

cubic-dev-ai · 2026-06-25T11:22:52Z

+# create an instance of ArrayOfArrayOfNumberOnly from a JSON string
+array_of_array_of_number_only_instance = ArrayOfArrayOfNumberOnly.from_json(json)
+# print the JSON string representation of the object
+print(ArrayOfArrayOfNumberOnly.to_json())


P2: Example code calls ArrayOfArrayOfNumberOnly.to_json() as a class method, but to_json is an instance method — will raise TypeError at runtime.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfArrayOfNumberOnly.md, line 20: <comment>Example code calls `ArrayOfArrayOfNumberOnly.to_json()` as a class method, but `to_json` is an instance method — will raise TypeError at runtime.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of ArrayOfArrayOfNumberOnly from a JSON string +array_of_array_of_number_only_instance = ArrayOfArrayOfNumberOnly.from_json(json) +# print the JSON string representation of the object +print(ArrayOfArrayOfNumberOnly.to_json()) + +# convert the object into a dict </file context>

cubic-dev-ai · 2026-06-25T11:22:52Z

+# create an instance of ArrayOfMapModel from a JSON string
+array_of_map_model_instance = ArrayOfMapModel.from_json(json)
+# print the JSON string representation of the object
+print(ArrayOfMapModel.to_json())


P2: ArrayOfMapModel.to_json() calls an instance method on the class, not an instance. to_json(self) expects self, so this raises TypeError: ArrayOfMapModel.to_json() missing 1 required positional argument: 'self' at runtime.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At samples/openapi3/client/petstore/python-httpx-sync/docs/ArrayOfMapModel.md, line 20: <comment>`ArrayOfMapModel.to_json()` calls an instance method on the class, not an instance. `to_json(self)` expects `self`, so this raises `TypeError: ArrayOfMapModel.to_json() missing 1 required positional argument: 'self'` at runtime.</comment> <file context> @@ -0,0 +1,29 @@ +# create an instance of ArrayOfMapModel from a JSON string +array_of_map_model_instance = ArrayOfMapModel.from_json(json) +# print the JSON string representation of the object +print(ArrayOfMapModel.to_json()) + +# convert the object into a dict </file context>

AntoineDuComptoirDesPharmacies and others added 6 commits June 22, 2026 17:30

#23032 :

323754f

Fix FILES

Merge branch 'feature/23032' of https://github.com/LeComptoirDesPharm…

469bc28

…acies/openapi-generator into LeComptoirDesPharmacies-feature/23032

test new samples in github workflow

b72bc9c

copy tests

5d96ab4

update samples

a436bdd

wing328 mentioned this pull request Jun 25, 2026

[python] add supportHttpxSync option for sync httpx methods (#23032) #24096

Closed

wing328 changed the title ~~Le comptoir des pharmacies feature/23032~~ [python] add supportHttpxSync option for sync httpx methods Jun 25, 2026

wing328 added Client: Python Enhancement: Feature labels Jun 25, 2026

wing328 added this to the 7.24.0 milestone Jun 25, 2026

wing328 marked this pull request as ready for review June 25, 2026 11:10

wing328 merged commit 5165243 into master Jun 25, 2026
42 checks passed

wing328 deleted the LeComptoirDesPharmacies-feature/23032 branch June 25, 2026 11:10

wing328 mentioned this pull request Jun 25, 2026

[python] fix #23032 add sync httpx support #23044

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[python] add supportHttpxSync option for sync httpx methods#24128

[python] add supportHttpxSync option for sync httpx methods#24128
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wing328 commented Jun 25, 2026 •

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	print(BaseDiscriminator.to_json())
	print(base_discriminator_instance.to_json())

	print(ArrayOfNumberOnly.to_json())
	print(array_of_number_only_instance.to_json())

	print(CircularReferenceModel.to_json())
	print(circular_reference_model_instance.to_json())

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wing328 commented Jun 25, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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wing328 commented Jun 25, 2026 •

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