More python inference snippets (#1028)

Given the size of the PR and the internal changes, I think it's best to
review the changes commit per commit.

This PR:
- improves snippets for document-question-answering
(0288149)
- improves snippets for automated-speech-recognition
(060cd21)
- adds snippets for image-to-image
(6234469)
- fixes some base64 imports
(0907d8f)

I added tests for all the above.
I did not add `InferenceClient` snippets for all tasks as it's
time-consuming. I only added tasks based on the trending models listed
on [huggingface.co/models](https://huggingface.co/models). We might add
more tasks in the future but that's less a priority.

Also includes some cleaning:
- remove useless `"export ..."` from python snippets module
(6d29991)
- order snippet definitions alphabetically for easier retrieval
(0900c99)


---

**EDIT (05/03/2025):** rebased from main + adapted to take providers
into account. The scope of this PR is more or less the same as before.

Author: Wauplin

packages/inference/src/snippets/python.ts

@@ -44,11 +44,11 @@ const snippetImportInferenceClient = (accessToken: string, provider: SnippetInfe
 from huggingface_hub import InferenceClient
 
 client = InferenceClient(
-	provider="${provider}",
-	api_key="${accessToken || "{API_TOKEN}"}"
+    provider="${provider}",
+    api_key="${accessToken || "{API_TOKEN}"}",
 )`;
 
-export const snippetConversational = (
+const snippetConversational = (
 	model: ModelDataMinimal,
 	accessToken: string,
 	provider: SnippetInferenceProvider,
@@ -89,7 +89,7 @@ stream = client.chat.completions.create(
 	model="${model.id}", 
 	messages=messages, 
 	${configStr}
-	stream=True
+	stream=True,
 )
 
 for chunk in stream:
@@ -159,7 +159,7 @@ print(completion.choices[0].message)`,
 	}
 };
 
-export const snippetZeroShotClassification = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetZeroShotClassification = (model: ModelDataMinimal): InferenceSnippet[] => {
 	return [
 		{
 			client: "requests",
@@ -176,12 +176,11 @@ output = query({
 	];
 };
 
-export const snippetZeroShotImageClassification = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetZeroShotImageClassification = (model: ModelDataMinimal): InferenceSnippet[] => {
 	return [
 		{
 			client: "requests",
-			content: `\
-def query(data):
+			content: `def query(data):
 	with open(data["image_path"], "rb") as f:
 		img = f.read()
 	payload={
@@ -199,7 +198,7 @@ output = query({
 	];
 };
 
-export const snippetBasic = (
+const snippetBasic = (
 	model: ModelDataMinimal,
 	accessToken: string,
 	provider: SnippetInferenceProvider
@@ -213,9 +212,8 @@ export const snippetBasic = (
 ${snippetImportInferenceClient(accessToken, provider)}
 
 result = client.${HFH_INFERENCE_CLIENT_METHODS[model.pipeline_tag]}(
-	model="${model.id}",
 	inputs=${getModelInputSnippet(model)},
-	provider="${provider}",
+	model="${model.id}",
 )
 
 print(result)
@@ -237,7 +235,7 @@ output = query({
 	];
 };
 
-export const snippetFile = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetFile = (model: ModelDataMinimal): InferenceSnippet[] => {
 	return [
 		{
 			client: "requests",
@@ -253,7 +251,7 @@ output = query(${getModelInputSnippet(model)})`,
 	];
 };
 
-export const snippetTextToImage = (
+const snippetTextToImage = (
 	model: ModelDataMinimal,
 	accessToken: string,
 	provider: SnippetInferenceProvider,
@@ -268,7 +266,7 @@ ${snippetImportInferenceClient(accessToken, provider)}
 # output is a PIL.Image object
 image = client.text_to_image(
 	${getModelInputSnippet(model)},
-	model="${model.id}"
+	model="${model.id}",
 )`,
 		},
 		...(provider === "fal-ai"
@@ -312,7 +310,7 @@ image = Image.open(io.BytesIO(image_bytes))`,
 	];
 };
 
-export const snippetTextToVideo = (
+const snippetTextToVideo = (
 	model: ModelDataMinimal,
 	accessToken: string,
 	provider: SnippetInferenceProvider
@@ -326,14 +324,14 @@ ${snippetImportInferenceClient(accessToken, provider)}
 
 video = client.text_to_video(
 	${getModelInputSnippet(model)},
-	model="${model.id}"
+	model="${model.id}",
 )`,
 				},
 		  ]
 		: [];
 };
 
-export const snippetTabular = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetTabular = (model: ModelDataMinimal): InferenceSnippet[] => {
 	return [
 		{
 			client: "requests",
@@ -349,7 +347,7 @@ response = query({
 	];
 };
 
-export const snippetTextToAudio = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetTextToAudio = (model: ModelDataMinimal): InferenceSnippet[] => {
 	// Transformers TTS pipeline and api-inference-community (AIC) pipeline outputs are diverged
 	// with the latest update to inference-api (IA).
 	// Transformers IA returns a byte object (wav file), whereas AIC returns wav and sampling_rate.
@@ -374,8 +372,7 @@ Audio(audio_bytes)`,
 		return [
 			{
 				client: "requests",
-				content: `\
-def query(payload):
+				content: `def query(payload):
 	response = requests.post(API_URL, headers=headers, json=payload)
 	return response.json()
 	
@@ -390,26 +387,97 @@ Audio(audio, rate=sampling_rate)`,
 	}
 };
 
-export const snippetDocumentQuestionAnswering = (model: ModelDataMinimal): InferenceSnippet[] => {
+const snippetAutomaticSpeechRecognition = (
+	model: ModelDataMinimal,
+	accessToken: string,
+	provider: SnippetInferenceProvider
+): InferenceSnippet[] => {
+	return [
+		{
+			client: "huggingface_hub",
+			content: `${snippetImportInferenceClient(accessToken, provider)}
+output = client.automatic_speech_recognition(${getModelInputSnippet(model)}, model="${model.id}")`,
+		},
+		snippetFile(model)[0],
+	];
+};
+
+const snippetDocumentQuestionAnswering = (
+	model: ModelDataMinimal,
+	accessToken: string,
+	provider: SnippetInferenceProvider
+): InferenceSnippet[] => {
+	const inputsAsStr = getModelInputSnippet(model) as string;
+	const inputsAsObj = JSON.parse(inputsAsStr);
+
 	return [
+		{
+			client: "huggingface_hub",
+			content: `${snippetImportInferenceClient(accessToken, provider)}
+output = client.document_question_answering(
+    "${inputsAsObj.image}",
+	question="${inputsAsObj.question}",
+	model="${model.id}",
+)`,
+		},
 		{
 			client: "requests",
-			content: `\
-def query(payload):
+			content: `def query(payload):
 	with open(payload["image"], "rb") as f:
 		img = f.read()
-		payload["image"] = base64.b64encode(img).decode("utf-8")  
+		payload["image"] = base64.b64encode(img).decode("utf-8")
 	response = requests.post(API_URL, headers=headers, json=payload)
 	return response.json()
 
 output = query({
-    "inputs": ${getModelInputSnippet(model)},
+    "inputs": ${inputsAsStr},
 })`,
 		},
 	];
 };
 
-export const pythonSnippets: Partial<
+const snippetImageToImage = (
+	model: ModelDataMinimal,
+	accessToken: string,
+	provider: SnippetInferenceProvider
+): InferenceSnippet[] => {
+	const inputsAsStr = getModelInputSnippet(model) as string;
+	const inputsAsObj = JSON.parse(inputsAsStr);
+
+	return [
+		{
+			client: "huggingface_hub",
+			content: `${snippetImportInferenceClient(accessToken, provider)}
+# output is a PIL.Image object
+image = client.image_to_image(
+    "${inputsAsObj.image}",
+    prompt="${inputsAsObj.prompt}",
+    model="${model.id}",
+)`,
+		},
+		{
+			client: "requests",
+			content: `def query(payload):
+	with open(payload["inputs"], "rb") as f:
+		img = f.read()
+		payload["inputs"] = base64.b64encode(img).decode("utf-8")
+	response = requests.post(API_URL, headers=headers, json=payload)
+	return response.content
+
+image_bytes = query({
+	"inputs": "${inputsAsObj.image}",
+	"parameters": {"prompt": "${inputsAsObj.prompt}"},
+})
+
+# You can access the image with PIL.Image for example
+import io
+from PIL import Image
+image = Image.open(io.BytesIO(image_bytes))`,
+		},
+	];
+};
+
+const pythonSnippets: Partial<
 	Record<
 		PipelineType,
 		(
@@ -435,7 +503,7 @@ export const pythonSnippets: Partial<
 	"image-text-to-text": snippetConversational,
 	"fill-mask": snippetBasic,
 	"sentence-similarity": snippetBasic,
-	"automatic-speech-recognition": snippetFile,
+	"automatic-speech-recognition": snippetAutomaticSpeechRecognition,
 	"text-to-image": snippetTextToImage,
 	"text-to-video": snippetTextToVideo,
 	"text-to-speech": snippetTextToAudio,
@@ -449,6 +517,7 @@ export const pythonSnippets: Partial<
 	"image-segmentation": snippetFile,
 	"document-question-answering": snippetDocumentQuestionAnswering,
 	"image-to-text": snippetFile,
+	"image-to-image": snippetImageToImage,
 	"zero-shot-image-classification": snippetZeroShotImageClassification,
 };
 
@@ -471,17 +540,24 @@ export function getPythonInferenceSnippet(
 		return snippets.map((snippet) => {
 			return {
 				...snippet,
-				content:
-					snippet.client === "requests"
-						? `\
-import requests
-
-API_URL = "${openAIbaseUrl(provider)}"
-headers = {"Authorization": ${accessToken ? `"Bearer ${accessToken}"` : `f"Bearer {API_TOKEN}"`}}
-
-${snippet.content}`
-						: snippet.content,
+				content: addImportsToSnippet(snippet.content, model, accessToken),
 			};
 		});
 	}
 }
+
+const addImportsToSnippet = (snippet: string, model: ModelDataMinimal, accessToken: string): string => {
+	if (snippet.includes("requests")) {
+		snippet = `import requests
+
+API_URL = "https://router.huggingface.co/hf-inference/models/${model.id}"
+headers = {"Authorization": ${accessToken ? `"Bearer ${accessToken}"` : `f"Bearer {API_TOKEN}"`}}
+
+${snippet}`;
+	}
+	if (snippet.includes("base64")) {
+		snippet = `import base64
+${snippet}`;
+	}
+	return snippet;
+};

packages/tasks-gen/scripts/generate-snippets-fixtures.ts

@@ -31,6 +31,17 @@ const TEST_CASES: {
 	providers: SnippetInferenceProvider[];
 	opts?: Record<string, unknown>;
 }[] = [
+	{
+		testName: "automatic-speech-recognition",
+		model: {
+			id: "openai/whisper-large-v3-turbo",
+			pipeline_tag: "automatic-speech-recognition",
+			tags: [],
+			inference: "",
+		},
+		languages: ["py"],
+		providers: ["hf-inference"],
+	},
 	{
 		testName: "conversational-llm-non-stream",
 		model: {
@@ -79,6 +90,28 @@ const TEST_CASES: {
 		providers: ["hf-inference", "fireworks-ai"],
 		opts: { streaming: true },
 	},
+	{
+		testName: "document-question-answering",
+		model: {
+			id: "impira/layoutlm-invoices",
+			pipeline_tag: "document-question-answering",
+			tags: [],
+			inference: "",
+		},
+		languages: ["py"],
+		providers: ["hf-inference"],
+	},
+	{
+		testName: "image-to-image",
+		model: {
+			id: "stabilityai/stable-diffusion-xl-refiner-1.0",
+			pipeline_tag: "image-to-image",
+			tags: [],
+			inference: "",
+		},
+		languages: ["py"],
+		providers: ["hf-inference"],
+	},
 	{
 		testName: "text-to-image",
 		model: {

packages/tasks-gen/snippets-fixtures/automatic-speech-recognition/0.huggingface_hub.hf-inference.py

@@ -0,0 +1,7 @@
+from huggingface_hub import InferenceClient
+
+client = InferenceClient(
+    provider="hf-inference",
+    api_key="api_token",
+)
+output = client.automatic_speech_recognition("sample1.flac", model="openai/whisper-large-v3-turbo")

packages/tasks-gen/snippets-fixtures/automatic-speech-recognition/1.requests.hf-inference.py

@@ -0,0 +1,12 @@
+import requests
+
+API_URL = "https://router.huggingface.co/hf-inference/models/openai/whisper-large-v3-turbo"
+headers = {"Authorization": "Bearer api_token"}
+
+def query(filename):
+	with open(filename, "rb") as f:
+		data = f.read()
+	response = requests.post(API_URL, headers=headers, data=data)
+	return response.json()
+
+output = query("sample1.flac")

packages/tasks-gen/snippets-fixtures/conversational-llm-non-stream/0.huggingface_hub.hf-inference.py

@@ -1,8 +1,8 @@
 from huggingface_hub import InferenceClient
 
 client = InferenceClient(
-	provider="hf-inference",
-	api_key="api_token"
+    provider="hf-inference",
+    api_key="api_token",
 )
 
 messages = [

packages/tasks-gen/snippets-fixtures/conversational-llm-non-stream/0.huggingface_hub.together.py

@@ -1,8 +1,8 @@
 from huggingface_hub import InferenceClient
 
 client = InferenceClient(
-	provider="together",
-	api_key="api_token"
+    provider="together",
+    api_key="api_token",
 )
 
 messages = [