Adapt code to be compliant on python >=3.9

skore/src/skore/cli/cli.py

@@ -65,23 +65,18 @@ def cli(args: list[str]):
 
     parsed_args: argparse.Namespace = parser.parse_args(args)
 
-    match parsed_args.subcommand:
-        case None:
-            parser.print_help()
-        case "launch":
-            __launch(
-                project_name=parsed_args.project_name,
-                port=parsed_args.port,
-                open_browser=parsed_args.open_browser,
-            )
-        case "create":
-            __create(
-                project_name=parsed_args.project_name,
-                working_dir=parsed_args.working_dir,
-            )
-        case "quickstart":
-            __quickstart()
-        case _:
-            # `parser.parse_args` raises an error if an unknown subcommand is passed,
-            # so this case is impossible
-            return
+    if parsed_args.subcommand == "launch":
+        __launch(
+            project_name=parsed_args.project_name,
+            port=parsed_args.port,
+            open_browser=parsed_args.open_browser,
+        )
+    elif parsed_args.subcommand == "create":
+        __create(
+            project_name=parsed_args.project_name,
+            working_dir=parsed_args.working_dir,
+        )
+    elif parsed_args.subcommand == "quickstart":
+        __quickstart()
+
+    parser.print_help()

skore/src/skore/cli/create_project.py

@@ -4,6 +4,7 @@
 from pathlib import Path
 
 from skore.cli import logger
+from typing import Optional, Union
 
 
 class ProjectNameTooLong(Exception):
@@ -25,7 +26,7 @@ class ImproperProjectName(Exception):
     """
 
 
-def validate_project_name(project_name: str) -> (bool, Exception | None):
+def validate_project_name(project_name: str) -> Union[bool, Exception, None]:
     """Validate the project name (the part before ".skore").
 
     Returns `(True, None)` if validation succeeded and `(False, Exception(...))`
@@ -78,7 +79,9 @@ class ProjectPermissionError(Exception):
     """Permissions in the directory do not allow creating a file."""
 
 
-def __create(project_name: str | Path, working_dir: Path | None = None) -> Path:
+def __create(
+    project_name: Union[str, Path], working_dir: Optional[Path] = None
+) -> Path:
     """Create a project file named according to `project_name`.
 
     Parameters

skore/src/skore/cli/launch_dashboard.py

@@ -10,6 +10,7 @@
 from skore.cli import logger
 from skore.project import load
 from skore.ui.app import create_app
+from typing import Union
 
 
 class ProjectNotFound(Exception):
@@ -18,7 +19,7 @@ class ProjectNotFound(Exception):
     project_path: Path
 
 
-def __launch(project_name: str | Path, port: int, open_browser: bool):
+def __launch(project_name: Union[str, Path], port: int, open_browser: bool):
     """Launch the UI to visualize a project.
 
     Parameters

skore/src/skore/item/item.py

@@ -4,9 +4,9 @@
 
 import inspect
 from abc import ABC, abstractmethod
-from datetime import UTC, datetime
+from datetime import datetime, timezone
 from functools import cached_property
-from typing import Any
+from typing import Any, Optional
 
 
 class Item(ABC):
@@ -33,10 +33,10 @@ class Item(ABC):
 
     def __init__(
         self,
-        created_at: str | None = None,
-        updated_at: str | None = None,
+        created_at: Optional[str] = None,
+        updated_at: Optional[str] = None,
     ):
-        now = datetime.now(tz=UTC).isoformat()
+        now = datetime.now(tz=timezone.utc).isoformat()
 
         self.created_at = created_at or now
         self.updated_at = updated_at or now

skore/src/skore/project.py

@@ -3,7 +3,7 @@
 import logging
 from functools import singledispatchmethod
 from pathlib import Path
-from typing import Any, Literal
+from typing import Any, Literal, Union
 
 from skore.item import (
     Item,
@@ -163,7 +163,7 @@ class ProjectLoadError(Exception):
     """Failed to load project."""
 
 
-def load(project_name: str | Path) -> Project:
+def load(project_name: Union[str, Path]) -> Project:
     """Load an existing Project given a project name or path."""
     # Transform a project name to a directory path:
     # - Resolve relative path to current working directory,

skore/src/skore/ui/app.py

@@ -8,10 +8,11 @@
 from skore.project import Project, load
 from skore.ui.dependencies import get_static_path
 from skore.ui.project_routes import router as project_router
+from typing import Optional
 
 
 def create_app(
-    project: Project | None = None, lifespan: Lifespan | None = None
+    project: Optional[Project] = None, lifespan: Optional[Lifespan] = None
 ) -> FastAPI:
     """FastAPI factory used to create the API to interact with `stores`."""
     app = FastAPI(lifespan=lifespan)

skore/tests/conftest.py

@@ -1,11 +1,11 @@
-from datetime import UTC, datetime
+from datetime import datetime, timezone
 
 import pytest
 
 
 @pytest.fixture
 def mock_now():
-    return datetime.now(tz=UTC)
+    return datetime.now(tz=timezone.utc)
 
 
 @pytest.fixture

skore/tests/unit/item/test_item_repository.py

@@ -1,12 +1,12 @@
-from datetime import UTC, datetime
+from datetime import datetime, timezone
 
 import pytest
 from skore.item import ItemRepository, MediaItem
 
 
 class TestItemRepository:
     def test_get_item(self):
-        now = datetime.now(tz=UTC).isoformat()
+        now = datetime.now(tz=timezone.utc).isoformat()
         item_representation = dict(
             media_bytes=b"media",
             media_encoding="utf-8",
@@ -35,7 +35,7 @@ def test_get_item(self):
             repository.get_item("key2")
 
     def test_put_item(self):
-        now = datetime.now(tz=UTC).isoformat()
+        now = datetime.now(tz=timezone.utc).isoformat()
         item = MediaItem(
             media_bytes=b"media",
             media_encoding="utf-8",
@@ -61,7 +61,7 @@ def test_put_item(self):
             }
         }
 
-        now2 = datetime.now(tz=UTC).isoformat()
+        now2 = datetime.now(tz=timezone.utc).isoformat()
         item2 = MediaItem(
             media_bytes=b"media2",
             media_encoding="utf-8",