feat: move exceptions into subpackages (#177)

### Summary of Changes

* Move exceptions related to ML to `safeds.ml.exceptions`.
* Move exceptions related to tabular data to
`safeds.data.tabular.exceptions`.

src/safeds/data/tabular/containers/_column.py

@@ -12,13 +12,13 @@
 
 from safeds.data.image.containers import Image
 from safeds.data.image.typing import ImageFormat
-from safeds.data.tabular.typing import ColumnType
-from safeds.exceptions import (
+from safeds.data.tabular.exceptions import (
     ColumnLengthMismatchError,
     ColumnSizeError,
     IndexOutOfBoundsError,
     NonNumericColumnError,
 )
+from safeds.data.tabular.typing import ColumnType
 
 if TYPE_CHECKING:
     from collections.abc import Callable, Iterable, Iterator

src/safeds/data/tabular/containers/_row.py

@@ -6,8 +6,8 @@
 from IPython.core.display_functions import DisplayHandle, display
 from pandas.core.util.hashing import hash_pandas_object
 
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 from safeds.data.tabular.typing import ColumnType, Schema
-from safeds.exceptions import UnknownColumnNameError
 
 
 class Row:

src/safeds/data/tabular/containers/_table.py

@@ -15,8 +15,7 @@
 
 from safeds.data.image.containers import Image
 from safeds.data.image.typing import ImageFormat
-from safeds.data.tabular.typing import ColumnType, Schema
-from safeds.exceptions import (
+from safeds.data.tabular.exceptions import (
     ColumnLengthMismatchError,
     ColumnSizeError,
     DuplicateColumnNameError,
@@ -26,6 +25,7 @@
     SchemaMismatchError,
     UnknownColumnNameError,
 )
+from safeds.data.tabular.typing import ColumnType, Schema
 
 from ._column import Column
 from ._row import Row

src/safeds/exceptions/__init__.py → src/safeds/data/tabular/exceptions/__init__.py

@@ -1,6 +1,6 @@
-"""Custom exceptions that can be raised by the `safe-ds` package."""
+"""Custom exceptions that can be raised when working with tabular data."""
 
-from ._data_exceptions import (
+from ._exceptions import (
     ColumnLengthMismatchError,
     ColumnSizeError,
     DuplicateColumnNameError,
@@ -12,27 +12,15 @@
     TransformerNotFittedError,
     UnknownColumnNameError,
 )
-from ._ml_exceptions import (
-    DatasetContainsTargetError,
-    DatasetMissesFeaturesError,
-    LearningError,
-    ModelNotFittedError,
-    PredictionError,
-)
 
 __all__ = [
     "ColumnLengthMismatchError",
     "ColumnSizeError",
-    "DatasetContainsTargetError",
-    "DatasetMissesFeaturesError",
     "DuplicateColumnNameError",
     "IndexOutOfBoundsError",
-    "LearningError",
     "MissingDataError",
     "MissingSchemaError",
-    "ModelNotFittedError",
     "NonNumericColumnError",
-    "PredictionError",
     "SchemaMismatchError",
     "TransformerNotFittedError",
     "UnknownColumnNameError",

src/safeds/data/tabular/transformation/_imputer.py

@@ -6,9 +6,9 @@
 from sklearn.impute import SimpleImputer as sk_SimpleImputer
 
 from safeds.data.tabular.containers import Table
+from safeds.data.tabular.exceptions import TransformerNotFittedError, UnknownColumnNameError
 from safeds.data.tabular.transformation._table_transformer import TableTransformer
 from safeds.data.tabular.typing import ImputerStrategy
-from safeds.exceptions import TransformerNotFittedError, UnknownColumnNameError
 
 
 class Imputer(TableTransformer):

src/safeds/data/tabular/transformation/_label_encoder.py

@@ -6,10 +6,10 @@
 from sklearn.preprocessing import OrdinalEncoder as sk_OrdinalEncoder
 
 from safeds.data.tabular.containers import Table
+from safeds.data.tabular.exceptions import TransformerNotFittedError, UnknownColumnNameError
 from safeds.data.tabular.transformation._table_transformer import (
     InvertibleTableTransformer,
 )
-from safeds.exceptions import TransformerNotFittedError, UnknownColumnNameError
 
 
 def warn(*_: Any, **__: Any) -> None:

src/safeds/data/tabular/transformation/_one_hot_encoder.py

@@ -4,10 +4,10 @@
 from sklearn.preprocessing import OneHotEncoder as sk_OneHotEncoder
 
 from safeds.data.tabular.containers import Table
+from safeds.data.tabular.exceptions import TransformerNotFittedError, UnknownColumnNameError
 from safeds.data.tabular.transformation._table_transformer import (
     InvertibleTableTransformer,
 )
-from safeds.exceptions import TransformerNotFittedError, UnknownColumnNameError
 
 
 class OneHotEncoder(InvertibleTableTransformer):

src/safeds/data/tabular/typing/_schema.py

@@ -3,8 +3,8 @@
 from dataclasses import dataclass
 from typing import TYPE_CHECKING
 
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 from safeds.data.tabular.typing._column_type import ColumnType
-from safeds.exceptions import UnknownColumnNameError
 
 if TYPE_CHECKING:
     import pandas as pd

src/safeds/ml/_util_sklearn.py

@@ -1,7 +1,7 @@
 from typing import Any
 
 from safeds.data.tabular.containers import Table, TaggedTable
-from safeds.exceptions import (
+from safeds.ml.exceptions import (
     DatasetContainsTargetError,
     DatasetMissesFeaturesError,
     LearningError,

src/safeds/ml/exceptions/__init__.py

@@ -0,0 +1,17 @@
+"""Custom exceptions that can be raised when working with ML models."""
+
+from ._exceptions import (
+    DatasetContainsTargetError,
+    DatasetMissesFeaturesError,
+    LearningError,
+    ModelNotFittedError,
+    PredictionError,
+)
+
+__all__ = [
+    "DatasetContainsTargetError",
+    "DatasetMissesFeaturesError",
+    "LearningError",
+    "ModelNotFittedError",
+    "PredictionError",
+]

src/safeds/ml/regression/_regressor.py

@@ -6,7 +6,7 @@
 from sklearn.metrics import mean_absolute_error as sk_mean_absolute_error
 from sklearn.metrics import mean_squared_error as sk_mean_squared_error
 
-from safeds.exceptions import ColumnLengthMismatchError
+from safeds.data.tabular.exceptions import ColumnLengthMismatchError
 
 if TYPE_CHECKING:
     from safeds.data.tabular.containers import Column, Table, TaggedTable

tests/safeds/data/tabular/containers/_column/test_boxplot.py

@@ -3,7 +3,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_boxplot_complex() -> None:

tests/safeds/data/tabular/containers/_column/test_correlation_with.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import ColumnLengthMismatchError, NonNumericColumnError
+from safeds.data.tabular.exceptions import ColumnLengthMismatchError, NonNumericColumnError
 
 
 def test_correlation_with() -> None:

tests/safeds/data/tabular/containers/_column/test_get_value.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import IndexOutOfBoundsError
+from safeds.data.tabular.exceptions import IndexOutOfBoundsError
 
 
 def test_get_value_valid() -> None:

tests/safeds/data/tabular/containers/_column/test_getitem.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import IndexOutOfBoundsError
+from safeds.data.tabular.exceptions import IndexOutOfBoundsError
 
 
 def test_getitem_valid() -> None:

tests/safeds/data/tabular/containers/_column/test_idness.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import ColumnSizeError
+from safeds.data.tabular.exceptions import ColumnSizeError
 
 
 @pytest.mark.parametrize(

tests/safeds/data/tabular/containers/_column/test_maximum.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_maximum_invalid() -> None:

tests/safeds/data/tabular/containers/_column/test_mean.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_mean_invalid() -> None:

tests/safeds/data/tabular/containers/_column/test_median.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_median_invalid() -> None:

tests/safeds/data/tabular/containers/_column/test_minimum.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_minimum_invalid() -> None:

tests/safeds/data/tabular/containers/_column/test_missing_value_ratio.py

@@ -2,7 +2,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import ColumnSizeError
+from safeds.data.tabular.exceptions import ColumnSizeError
 
 
 @pytest.mark.parametrize(

tests/safeds/data/tabular/containers/_column/test_stability.py

@@ -4,7 +4,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import ColumnSizeError
+from safeds.data.tabular.exceptions import ColumnSizeError
 
 
 @pytest.mark.parametrize(

tests/safeds/data/tabular/containers/_column/test_sum.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column
-from safeds.exceptions import NonNumericColumnError
+from safeds.data.tabular.exceptions import NonNumericColumnError
 
 
 def test_sum_valid() -> None:

tests/safeds/data/tabular/containers/_table/test_add_column.py

@@ -2,8 +2,8 @@
 import pytest
 from _pytest.python_api import raises
 from safeds.data.tabular.containers import Column, Table
+from safeds.data.tabular.exceptions import ColumnSizeError, DuplicateColumnNameError
 from safeds.data.tabular.typing import ColumnType, Integer, String
-from safeds.exceptions import ColumnSizeError, DuplicateColumnNameError
 
 
 @pytest.mark.parametrize(

tests/safeds/data/tabular/containers/_table/test_add_row.py

@@ -1,8 +1,8 @@
 import pandas as pd
 from _pytest.python_api import raises
 from safeds.data.tabular.containers import Row, Table
+from safeds.data.tabular.exceptions import SchemaMismatchError
 from safeds.data.tabular.typing import Integer, Schema, String
-from safeds.exceptions import SchemaMismatchError
 
 
 def test_add_row_valid() -> None:

tests/safeds/data/tabular/containers/_table/test_from_columns.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column, Table
-from safeds.exceptions import MissingDataError
+from safeds.data.tabular.exceptions import MissingDataError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_from_rows.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Row, Table
-from safeds.exceptions import MissingDataError
+from safeds.data.tabular.exceptions import MissingDataError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_get_column.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column, Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 
 def test_get_column_valid() -> None:

tests/safeds/data/tabular/containers/_table/test_get_row.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import IndexOutOfBoundsError
+from safeds.data.tabular.exceptions import IndexOutOfBoundsError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_keep_only_columns.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_lineplot.py

@@ -3,7 +3,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 
 def test_lineplot(monkeypatch: _pytest.monkeypatch) -> None:

tests/safeds/data/tabular/containers/_table/test_remove_columns.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_rename.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import DuplicateColumnNameError, UnknownColumnNameError
+from safeds.data.tabular.exceptions import DuplicateColumnNameError, UnknownColumnNameError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_replace_column.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column, Table
-from safeds.exceptions import (
+from safeds.data.tabular.exceptions import (
     ColumnSizeError,
     DuplicateColumnNameError,
     UnknownColumnNameError,

tests/safeds/data/tabular/containers/_table/test_scatterplot.py

@@ -3,7 +3,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 
 def test_scatterplot(monkeypatch: _pytest.monkeypatch) -> None:

tests/safeds/data/tabular/containers/_table/test_table_add_column.py

@@ -1,7 +1,7 @@
 import pandas as pd
 import pytest
 from safeds.data.tabular.containers import Column, Table
-from safeds.exceptions import ColumnSizeError, DuplicateColumnNameError
+from safeds.data.tabular.exceptions import ColumnSizeError, DuplicateColumnNameError
 
 from tests.helpers import resolve_resource_path
 

tests/safeds/data/tabular/containers/_table/test_transform_column.py

@@ -1,6 +1,6 @@
 import pytest
 from safeds.data.tabular.containers import Table
-from safeds.exceptions import UnknownColumnNameError
+from safeds.data.tabular.exceptions import UnknownColumnNameError
 
 from tests.helpers import resolve_resource_path