Refactor: Clean up import statements and improve error message formatting

Author: PierreRaybaut

datalab_kernel/backends/webapi.py

@@ -167,8 +167,7 @@ def _raise_for_status(self, response: httpx.Response) -> None:
                 raise
             except Exception:
                 raise RuntimeError(
-                    f"DataLab server error (HTTP 500). "
-                    f"URL: {response.request.url}"
+                    f"DataLab server error (HTTP 500). URL: {response.request.url}"
                 ) from None
 
         response.raise_for_status()

datalab_kernel/kernel.py

@@ -14,11 +14,11 @@
 from __future__ import annotations
 
 from ipykernel.ipkernel import IPythonKernel
+from sigima import create_image, create_signal
 
 from datalab_kernel import __version__
 from datalab_kernel.plotter import Plotter
 from datalab_kernel.workspace import Workspace
-from sigima import create_image, create_signal
 
 
 class DataLabKernel(IPythonKernel):

datalab_kernel/tests/conftest.py

@@ -20,7 +20,9 @@ def pytest_configure(config):
     config.addinivalue_line("markers", "standalone: tests for standalone mode only")
     config.addinivalue_line("markers", "live: tests requiring live DataLab instance")
     config.addinivalue_line("markers", "contract: contract tests for both modes")
-    config.addinivalue_line("markers", "integration: integration tests with external services")
+    config.addinivalue_line(
+        "markers", "integration: integration tests with external services"
+    )
     config.addinivalue_line("markers", "webapi: tests requiring WebAPI backend")
 
 

datalab_kernel/tests/contract/test_api.py

@@ -16,8 +16,8 @@
 
 import numpy as np
 import pytest
-
 from sigima import create_image, create_signal
+
 from datalab_kernel.plotter import Plotter
 from datalab_kernel.workspace import StandaloneBackend, Workspace
 

datalab_kernel/tests/data.py

@@ -11,7 +11,6 @@
 from __future__ import annotations
 
 import numpy as np
-
 from sigima import ImageObj, SignalObj, create_image, create_signal
 
 

datalab_kernel/tests/test_webapi_backend.py

@@ -196,13 +196,13 @@ def test_short_id_pattern_matching(self):
 
         # Should not match
         invalid_cases = [
-            "s01",       # Not enough digits
-            "s0001",     # Too many digits
-            "x001",      # Wrong prefix
-            "signal1",   # Not a short ID
-            "",          # Empty
-            "s",         # Just letter
-            "001",       # Just numbers
+            "s01",  # Not enough digits
+            "s0001",  # Too many digits
+            "x001",  # Wrong prefix
+            "signal1",  # Not a short ID
+            "",  # Empty
+            "s",  # Just letter
+            "001",  # Just numbers
         ]
         for case in invalid_cases:
             match = re.match(pattern, case.lower())

datalab_kernel/tests/unit/test_objects.py

@@ -11,7 +11,6 @@
 from __future__ import annotations
 
 import numpy as np
-
 from sigima import (
     ImageObj,
     SignalObj,