wip

Author: MarcoGorelli

pandas/tests/copy_view/test_methods.py

@@ -1105,28 +1105,6 @@ def test_putmask_aligns_rhs_no_reference(dtype):
     assert np.shares_memory(arr_a, get_array(df, "a"))
 
 
-@pytest.mark.parametrize(
-    "val, exp, warn", [(5.5, True, FutureWarning), (5, False, None)]
-)
-def test_putmask_dont_copy_some_blocks(val, exp, warn):
-    df = DataFrame({"a": [1, 2], "b": 1, "c": 1.5})
-    view = df[:]
-    df_orig = df.copy()
-    indexer = DataFrame(
-        [[True, False, False], [True, False, False]], columns=list("abc")
-    )
-    with tm.assert_produces_warning(warn, match="incompatible dtype"):
-        df[indexer] = val
-
-    assert not np.shares_memory(get_array(view, "a"), get_array(df, "a"))
-    # TODO(CoW): Could split blocks to avoid copying the whole block
-    assert np.shares_memory(get_array(view, "b"), get_array(df, "b")) is exp
-    assert np.shares_memory(get_array(view, "c"), get_array(df, "c"))
-    assert df._mgr._has_no_reference(1) is not exp
-    assert not df._mgr._has_no_reference(2)
-    tm.assert_frame_equal(view, df_orig)
-
-
 @pytest.mark.parametrize("dtype", ["int64", "Int64"])
 @pytest.mark.parametrize(
     "func",

pandas/tests/frame/indexing/test_coercion.py

@@ -46,40 +46,6 @@ def test_loc_setitem_multiindex_columns(self, consolidate):
         # TODO: i think this isn't about MultiIndex and could be done with iloc?
 
 
-def test_37477():
-    # fixed by GH#45121
-    orig = DataFrame({"A": [1, 2, 3], "B": [3, 4, 5]})
-    expected = DataFrame({"A": [1, 2, 3], "B": [3, 1.2, 5]})
-
-    df = orig.copy()
-    with tm.assert_produces_warning(
-        FutureWarning, match="Setting an item of incompatible dtype"
-    ):
-        df.at[1, "B"] = 1.2
-    tm.assert_frame_equal(df, expected)
-
-    df = orig.copy()
-    with tm.assert_produces_warning(
-        FutureWarning, match="Setting an item of incompatible dtype"
-    ):
-        df.loc[1, "B"] = 1.2
-    tm.assert_frame_equal(df, expected)
-
-    df = orig.copy()
-    with tm.assert_produces_warning(
-        FutureWarning, match="Setting an item of incompatible dtype"
-    ):
-        df.iat[1, 1] = 1.2
-    tm.assert_frame_equal(df, expected)
-
-    df = orig.copy()
-    with tm.assert_produces_warning(
-        FutureWarning, match="Setting an item of incompatible dtype"
-    ):
-        df.iloc[1, 1] = 1.2
-    tm.assert_frame_equal(df, expected)
-
-
 def test_6942(indexer_al):
     # check that the .at __setitem__ after setting "Live" actually sets the data
     start = Timestamp("2014-04-01")