feat: Add support for Python 3.13 (#6685)

.github/actions/setup-uv/action.yml

@@ -4,7 +4,7 @@ description: "Checks out code, installs uv, and sets up Python environment"
 inputs:
   python-version:
     description: "Python version to use"
-    default: "3.12"
+    default: "3.13"
 
 runs:
   using: "composite"

.github/workflows/codeflash.yml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 0
       - name: "Setup Environment"
         uses: ./.github/actions/setup-uv
-      - run: uv sync --extra dev
+      - run: uv sync
       - name: Run Codeflash Optimizer
         working-directory: ./src/backend/base
         continue-on-error: true

.github/workflows/docker-build.yml

@@ -306,7 +306,7 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.12"
+          - "3.13"
     steps:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v4

.github/workflows/integration_tests.yml

@@ -13,7 +13,7 @@ on:
         description: "(Optional) Python versions to test"
         required: true
         type: string
-        default: "['3.10', '3.11', '3.12']"
+        default: "['3.10', '3.11', '3.12', '3.13']"
       ref:
         description: "(Optional) ref to checkout"
         required: false
@@ -30,6 +30,7 @@ jobs:
       max-parallel: 1 # Currently, we can only run at a time for collection-per-db-constraints
       matrix:
         python-version:
+          - "3.13"
           - "3.12"
           - "3.11"
           - "3.10"

.github/workflows/lint-py.yml

@@ -19,6 +19,7 @@ jobs:
     strategy:
       matrix:
         python-version:
+          - "3.13"
           - "3.12"
           - "3.11"
           - "3.10"

.github/workflows/nightly_build.yml

@@ -8,7 +8,7 @@ on:
 
 env:
   POETRY_VERSION: "1.8.3"
-  PYTHON_VERSION: "3.12"
+  PYTHON_VERSION: "3.13"
 
 jobs:
   create-nightly-tag:
@@ -139,7 +139,7 @@ jobs:
     needs: create-nightly-tag
     uses: ./.github/workflows/python_test.yml
     with:
-      python-versions: '["3.10", "3.11", "3.12"]'
+      python-versions: '["3.10", "3.11", "3.12", "3.13"]'
 
   # Not making nightly builds dependent on integration test success
   # due to inherent flakiness of 3rd party integrations
@@ -149,7 +149,7 @@ jobs:
   #   needs: create-nightly-tag
   #   uses: ./.github/workflows/integration_tests.yml
   #   with:
-  #     python-versions: '["3.10", "3.11", "3.12"]'
+  #     python-versions: '["3.10", "3.11", "3.12", "3.13"]'
   #     ref: ${{ needs.create-nightly-tag.outputs.tag }}
 
   release-nightly-build:

.github/workflows/python_test.yml

@@ -7,7 +7,7 @@ on:
         description: "(Optional) Python versions to test"
         required: true
         type: string
-        default: "['3.10', '3.11', '3.12']"
+        default: "['3.10', '3.11', '3.12', '3.13']"
       ref:
         description: "(Optional) ref to checkout"
         required: false
@@ -23,7 +23,7 @@ on:
         description: "(Optional) Python versions to test"
         required: true
         type: string
-        default: "['3.10', '3.11', '3.12']"
+        default: "['3.10', '3.11', '3.12', '3.13']"
 env:
   POETRY_VERSION: "1.8.2"
   NODE_VERSION: "21"
@@ -37,7 +37,7 @@ jobs:
       UV_CACHE_DIR: /tmp/.uv-cache
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]' ) }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]' ) }}
         splitCount: [5]
         group: [1, 2, 3, 4, 5]
     steps:
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]' ) }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]' ) }}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12"]') }}
+        python-version: ${{ fromJson(inputs.python-versions || '["3.10", "3.11", "3.12", "3.13"]') }}
     steps:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v4

.github/workflows/release.yml

@@ -47,7 +47,7 @@ jobs:
     name: CI
     uses: ./.github/workflows/ci.yml
     with:
-      python-versions: "['3.10', '3.11', '3.12']"
+      python-versions: "['3.10', '3.11', '3.12', '3.13']"
       frontend-tests-folder: "tests"
       release: true
 

.github/workflows/release_nightly.yml

@@ -55,7 +55,7 @@ on:
 
 env:
   POETRY_VERSION: "1.8.3"
-  PYTHON_VERSION: "3.12"
+  PYTHON_VERSION: "3.13"
 
 jobs:
   release-nightly-base:

.github/workflows/style-check-py.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.12"
+          - "3.13"
     steps:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v4

.github/workflows/typescript_test.yml

@@ -51,7 +51,7 @@ on:
 
 env:
   NODE_VERSION: "21"
-  PYTHON_VERSION: "3.12"
+  PYTHON_VERSION: "3.13"
   # Define the directory where Playwright browsers will be installed.
   # Adjust if your project uses a different path.
   PLAYWRIGHT_BROWSERS_PATH: "ms-playwright"

Makefile

@@ -142,7 +142,7 @@ coverage: ## run the tests and generate a coverage report
 	@uv run coverage erase
 
 unit_tests: ## run unit tests
-	@uv sync --extra dev --frozen
+	@uv sync --frozen
 	@EXTRA_ARGS=""
 	@if [ "$(async)" = "true" ]; then \
 		EXTRA_ARGS="$$EXTRA_ARGS --instafail -n auto"; \

pyproject.toml

@@ -3,7 +3,7 @@
 name = "langflow"
 version = "1.1.5"
 description = "A Python package with a built-in web application"
-requires-python = ">=3.10,<3.13"
+requires-python = ">=3.10,<3.14"
 license = "MIT"
 keywords = ["nlp", "langchain", "openai", "gpt", "gui"]
 readme = "README.md"
@@ -26,7 +26,7 @@ dependencies = [
     "huggingface-hub[inference]>=0.23.2,<1.0.0",
     "networkx==3.4.2",
     "fake-useragent==1.5.1",
-    "pyarrow==17.0.0",
+    "pyarrow==19.0.0",
     "wikipedia==1.4.0",
     "qdrant-client==1.9.2",
     "weaviate-client==4.10.2",
@@ -52,7 +52,7 @@ dependencies = [
     "pytube==15.0.0",
     "dspy-ai==2.5.41",
     "assemblyai==0.35.1",
-    "litellm==1.59.8",
+    "litellm==1.60.2",
     "chromadb==0.5.23",
     "zep-python==2.0.2",
     "youtube-transcript-api==0.6.3",
@@ -105,7 +105,7 @@ dependencies = [
     "sseclient-py==1.8.0",
     "arize-phoenix-otel>=0.6.1",
     "openinference-instrumentation-langchain>=0.1.29",
-    "crewai~=0.86.0",
+    "crewai==0.102.0",
     "mcp>=0.9.1",
     "uv>=0.5.7",
     "ag2>=0.1.0",
@@ -188,7 +188,7 @@ dev-dependencies = [
     "asgi-lifespan>=2.1.0",
     "pytest-github-actions-annotate-failures>=0.2.0",
     "pytest-codspeed>=3.0.0",
-    "blockbuster>=1.5.18,<1.6",
+    "blockbuster>=1.5.20,<1.6",
     "types-aiofiles>=24.1.0.20240626",
     "codeflash>=0.8.4",
     "hypothesis>=6.123.17",

src/backend/base/langflow/initial_setup/setup.py

@@ -597,8 +597,8 @@ async def load_flows_from_directory() -> None:
         # Ensure that the default folder exists for this user
         _ = await get_or_create_default_folder(session, user.id)
 
-        async for file_path in anyio.Path(flows_path).iterdir():
-            if not await file_path.is_file() or file_path.suffix != ".json":
+        for file_path in await asyncio.to_thread(Path(flows_path).iterdir):
+            if not await anyio.Path(file_path).is_file() or file_path.suffix != ".json":
                 continue
             logger.info(f"Loading flow from file: {file_path.name}")
             async with async_open(str(file_path), "r", encoding="utf-8") as f:

src/backend/base/langflow/services/storage/local.py

@@ -1,3 +1,6 @@
+import asyncio
+from pathlib import Path
+
 import anyio
 from aiofile import async_open
 from loguru import logger
@@ -88,7 +91,9 @@ class LocalStorageService(StorageService):
             msg = f"Flow {flow_id} directory does not exist."
             raise FileNotFoundError(msg)
 
-        files = [file.name async for file in folder_path.iterdir() if await file.is_file()]
+        files = [
+            file.name for file in await asyncio.to_thread(Path(folder_path).iterdir) if await anyio.Path(file).is_file()
+        ]
         logger.info(f"Listed {len(files)} files in flow {flow_id}.")
         return files
 

src/backend/base/langflow/utils/validate.py

@@ -108,14 +108,15 @@ def execute_function(code, function_name, *args, **kwargs):
     )
     function_code.parent = None
     code_obj = compile(ast.Module(body=[function_code], type_ignores=[]), "<string>", "exec")
+    exec_locals = dict(locals())
     try:
-        exec(code_obj, exec_globals, locals())
+        exec(code_obj, exec_globals, exec_locals)
     except Exception as exc:
         msg = "Function string does not contain a function"
         raise ValueError(msg) from exc
 
     # Add the function to the exec_globals dictionary
-    exec_globals[function_name] = locals()[function_name]
+    exec_globals[function_name] = exec_locals[function_name]
 
     return exec_globals[function_name](*args, **kwargs)
 
@@ -152,9 +153,10 @@ def create_function(code, function_name):
     )
     function_code.parent = None
     code_obj = compile(ast.Module(body=[function_code], type_ignores=[]), "<string>", "exec")
+    exec_locals = dict(locals())
     with contextlib.suppress(Exception):
-        exec(code_obj, exec_globals, locals())
-    exec_globals[function_name] = locals()[function_name]
+        exec(code_obj, exec_globals, exec_locals)
+    exec_globals[function_name] = exec_locals[function_name]
 
     # Return a function that imports necessary modules and calls the target function
     def wrapped_function(*args, **kwargs):
@@ -306,8 +308,9 @@ def build_class_constructor(compiled_class, exec_globals, class_name):
     Returns:
          Constructor function for the class
     """
-    exec(compiled_class, exec_globals, locals())
-    exec_globals[class_name] = locals()[class_name]
+    exec_locals = dict(locals())
+    exec(compiled_class, exec_globals, exec_locals)
+    exec_globals[class_name] = exec_locals[class_name]
 
     # Return a function that imports necessary modules and creates an instance of the target class
     def build_custom_class():

src/backend/base/pyproject.toml

@@ -2,7 +2,7 @@
 name = "langflow-base"
 version = "0.1.5"
 description = "A Python package with a built-in web application"
-requires-python = ">=3.10,<3.13"
+requires-python = ">=3.10,<3.14"
 license = "MIT"
 keywords = ["nlp", "langchain", "openai", "gpt", "gui"]
 readme = "README.md"
@@ -37,7 +37,7 @@ dependencies = [
     "cachetools>=5.5.0,<6.0.0",
     "platformdirs>=4.2.0,<5.0.0",
     "python-multipart>=0.0.12,<1.0.0",
-    "orjson==3.10.0",
+    "orjson==3.10.15",
     "alembic>=1.13.0,<2.0.0",
     "passlib>=1.7.4,<2.0.0",
     "bcrypt==4.0.1",