diff --git a/src/jcloud_docsgen/core/python/_core.py b/src/jcloud_docsgen/core/python/_core.py
index cfcda9a..483829a 100644
--- a/src/jcloud_docsgen/core/python/_core.py
+++ b/src/jcloud_docsgen/core/python/_core.py
@@ -28,7 +28,7 @@ from ...exceptions import (
     InvalidNamespaceError,
     PythonArgumentStructureError,
 )
-from ...utils import get_relative_path_segments, non_empty_str
+from ...utils import fit_row_length, get_relative_path_segments, non_empty_str
 from .arguments import PythonArgumentKind, PythonFunctionArgument
 from .definitions import (
     PythonAsyncFunctionDefinition,
@@ -184,28 +184,6 @@ def _signature_argument_list(
     return args
 
 
-def _fit_row_length(expected: int, row: tuple) -> tuple:
-    """
-    Fits the row length to the expected length.
-
-    If the row is too long, the tail, that makes it too long, is omitted.
-    If it is too short, it is filled with ``None`` (at the end).
-
-    :param expected: The expected length.
-    :type expected: int
-    :param row: The row.
-    :type row: tuple
-    """
-
-    if expected < 0:
-        raise ValueError('expected must be larger than or equal 0.')
-
-    if len(row) > expected:
-        return row[:expected]
-    else:
-        return row + (None,) * (expected - len(row))
-
-
 def _markdown_table(
     header: tuple,
     body: list[tuple],
@@ -257,7 +235,7 @@ def _markdown_table(
                         f'{"s" if header_len > 1 else ""}, got {len(row)}'
                     )
                 else:
-                    row = _fit_row_length(header_len, row)
+                    row = fit_row_length(header_len, row)
 
             table += (
                 '| '
@@ -286,7 +264,7 @@ def _markdown_table(
                         f'{"s" if header_len > 1 else ""}, got {len(row)}'
                     )
                 else:
-                    row = _fit_row_length(header_len, row)
+                    row = fit_row_length(header_len, row)
 
             sep = '- '
             for i, col in enumerate(row):
diff --git a/src/jcloud_docsgen/utils.py b/src/jcloud_docsgen/utils.py
index 82d33b2..4c355b7 100644
--- a/src/jcloud_docsgen/utils.py
+++ b/src/jcloud_docsgen/utils.py
@@ -34,6 +34,7 @@ __all__ = [
     'assert_that_is_instance',
     'non_empty_str',
     'get_relative_path_segments',
+    'fit_row_length',
 ]
 
 
@@ -237,3 +238,25 @@ def get_relative_path_segments(
         )
         .parts,
     )
+
+
+def fit_row_length(expected: int, row: tuple) -> tuple:
+    """
+    Fits the row length to the expected length.
+
+    If the row is too long, the tail, that makes it too long, is omitted.
+    If it is too short, it is filled with ``None`` (at the end).
+
+    :param expected: The expected length.
+    :type expected: int
+    :param row: The row.
+    :type row: tuple
+    """
+
+    if expected < 0:
+        raise ValueError('expected must be larger than or equal 0.')
+
+    if len(row) > expected:
+        return row[:expected]
+    else:
+        return row + (None,) * (expected - len(row))
diff --git a/tests/unit/core/python/_core/test__fit_row_length.py b/tests/unit/utils/test_fit_row_length.py
similarity index 83%
rename from tests/unit/core/python/_core/test__fit_row_length.py
rename to tests/unit/utils/test_fit_row_length.py
index 7fc904e..b235b8e 100644
--- a/tests/unit/core/python/_core/test__fit_row_length.py
+++ b/tests/unit/utils/test_fit_row_length.py
@@ -14,7 +14,7 @@
 
 import pytest
 
-from src.jcloud_docsgen.core.python._core import _fit_row_length
+from src.jcloud_docsgen.utils import fit_row_length
 
 
 @pytest.mark.parametrize(
@@ -37,8 +37,8 @@ from src.jcloud_docsgen.core.python._core import _fit_row_length
         (3, (1, 2, 3), (1, 2, 3)),
     ],
 )
-def test__fit_row_length(expected_length, row, expected):
-    assert _fit_row_length(expected_length, row) == expected
+def test_fit_row_length(expected_length, row, expected):
+    assert fit_row_length(expected_length, row) == expected
 
 
 @pytest.mark.parametrize(
@@ -60,7 +60,7 @@ def test__fit_row_length(expected_length, row, expected):
         (-42, ValueError),
     ],
 )
-def test__fit_row_length_exceptions(expected_length, row, expected_exception):
+def test_fit_row_length_exceptions(expected_length, row, expected_exception):
     with pytest.raises(expected_exception) as exc_info:
-        _fit_row_length(expected_length, row)
+        fit_row_length(expected_length, row)
     assert str(exc_info.value) == 'expected must be larger than or equal 0.'