readonly -> read-only

Author: jorisvandenbossche

pandas/core/arrays/_mixins.py

@@ -257,7 +257,7 @@ def shift(self, periods: int = 1, fill_value=None) -> Self:
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         key = check_array_indexer(self, key)
         value = self._validate_setitem_value(value)

pandas/core/arrays/arrow/array.py

@@ -2088,7 +2088,7 @@ def __setitem__(self, key, value) -> None:
         None
         """
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         # GH50085: unwrap 1D indexers
         if isinstance(key, tuple) and len(key) == 1:

pandas/core/arrays/base.py

@@ -480,7 +480,7 @@ def __setitem__(self, key, value) -> None:
         # on a copy of the data.
         # Check if the array is readonly
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         raise NotImplementedError(f"{type(self)} does not implement __setitem__.")
 

pandas/core/arrays/interval.py

@@ -730,7 +730,7 @@ def __getitem__(self, key: PositionalIndexer) -> Self | IntervalOrNA:
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         value_left, value_right = self._validate_setitem_value(value)
         key = check_array_indexer(self, key)

pandas/core/arrays/masked.py

@@ -307,7 +307,7 @@ def _validate_setitem_value(self, value):
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         key = check_array_indexer(self, key)
 

pandas/core/arrays/sparse/array.py

@@ -596,7 +596,7 @@ def __array__(
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
         # I suppose we could allow setting of non-fill_value elements.
         # TODO(SparseArray.__setitem__): remove special cases in
         # ExtensionBlock.where

pandas/core/arrays/string_.py

@@ -815,7 +815,7 @@ def _maybe_convert_setitem_value(self, value):
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         value = self._maybe_convert_setitem_value(value)
 

pandas/tests/extension/base/setitem.py

@@ -464,13 +464,13 @@ def test_readonly_property(self, data):
         data_orig = data.copy()
         assert data_orig._readonly is False
 
-        with pytest.raises(ValueError, match="Cannot modify readonly array"):
+        with pytest.raises(ValueError, match="Cannot modify read-only array"):
             data[0] = data[1]
 
-        with pytest.raises(ValueError, match="Cannot modify readonly array"):
+        with pytest.raises(ValueError, match="Cannot modify read-only array"):
             data[0:3] = data[1]
 
-        with pytest.raises(ValueError, match="Cannot modify readonly array"):
+        with pytest.raises(ValueError, match="Cannot modify read-only array"):
             data[np.array([True] * len(data))] = data[1]
 
         tm.assert_extension_array_equal(data, data_orig)

pandas/tests/extension/date/array.py

@@ -149,7 +149,7 @@ def __getitem__(self, item: PositionalIndexer):
 
     def __setitem__(self, key: int | slice | np.ndarray, value: Any) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         if not isinstance(key, int):
             raise NotImplementedError("only ints are supported as indexes")

pandas/tests/extension/decimal/array.py

@@ -205,7 +205,7 @@ def astype(self, dtype, copy=True):
 
     def __setitem__(self, key, value) -> None:
         if self._readonly:
-            raise ValueError("Cannot modify readonly array")
+            raise ValueError("Cannot modify read-only array")
 
         if is_list_like(value):
             if is_scalar(key):