chore: explictly support Python 3.9 in Together AI integration (#2355)

* chore: explictly support Python 3.9 in Together AI integration

* replace pipe operator

Author: anakin87

.github/workflows/together_ai.yml

@@ -32,7 +32,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.10", "3.13"]
+        python-version: ["3.9", "3.13"]
 
     steps:
       - name: Support longpaths
@@ -50,11 +50,11 @@ jobs:
       - name: Install Hatch
         run: pip install --upgrade hatch
       - name: Lint
-        if: matrix.python-version == '3.10' && runner.os == 'Linux'
+        if: matrix.python-version == '3.9' && runner.os == 'Linux'
         run: hatch run fmt-check && hatch run test:types
 
       - name: Generate docs
-        if: matrix.python-version == '3.10' && runner.os == 'Linux'
+        if: matrix.python-version == '3.9' && runner.os == 'Linux'
         run: hatch run docs
 
       - name: Run tests

integrations/together_ai/pyproject.toml

@@ -7,7 +7,7 @@ name = "together-ai-haystack"
 dynamic = ["version"]
 description = 'An integration between the Together AI framework and Haystack'
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.9"
 license = "Apache-2.0"
 keywords = []
 authors = [{ name = "deepset GmbH", email = "info@deepset.ai" }]
@@ -16,6 +16,7 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Development Status :: 4 - Beta",
     "Programming Language :: Python",
+    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",

integrations/together_ai/src/haystack_integrations/components/generators/together_ai/generator.py

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-from typing import Any, Dict, Optional, cast
+from typing import Any, Dict, Optional, Union, cast
 
 from haystack import component, default_to_dict, logging
 from haystack.dataclasses import ChatMessage, StreamingCallbackT
@@ -141,9 +141,9 @@ def run(  # type: ignore[override]
         self,
         *,
         prompt: str,
-        system_prompt: str | None = None,
-        streaming_callback: StreamingCallbackT | None = None,
-        generation_kwargs: dict[str, Any] | None = None,
+        system_prompt: Optional[str] = None,
+        streaming_callback: Optional[StreamingCallbackT] = None,
+        generation_kwargs: Optional[dict[str, Any]] = None,
     ) -> dict[str, Any]:
         """
         Generate text completions synchronously.
@@ -179,9 +179,9 @@ async def run_async(  # type: ignore[override]
         self,
         *,
         prompt: str,
-        system_prompt: str | None = None,
-        streaming_callback: StreamingCallbackT | None = None,
-        generation_kwargs: dict[str, Any] | None = None,
+        system_prompt: Optional[str] = None,
+        streaming_callback: Optional[StreamingCallbackT] = None,
+        generation_kwargs: Optional[dict[str, Any]] = None,
     ) -> dict[str, Any]:
         """
         Generate text completions asynchronously.
@@ -211,7 +211,7 @@ async def run_async(  # type: ignore[override]
         replies = chat_response["replies"]
         return self._convert_chat_response_to_generator_format(replies)
 
-    def _prepare_messages(self, prompt: str, system_prompt: str | None = None) -> list[ChatMessage]:
+    def _prepare_messages(self, prompt: str, system_prompt: Optional[str] = None) -> list[ChatMessage]:
         """
         Convert prompt and system_prompt to ChatMessage format.
 
@@ -228,7 +228,7 @@ def _prepare_messages(self, prompt: str, system_prompt: str | None = None) -> li
 
     def _convert_chat_response_to_generator_format(
         self, chat_messages: list[ChatMessage]
-    ) -> dict[str, list[str] | list[dict[str, Any]]]:
+    ) -> dict[str, Union[list[str], list[dict[str, Any]]]]:
         """
         Convert ChatGenerator response format to Generator format.