issue 48855 enable pylint C-type "disallowed-name " warning (#49379)

* remove from exclusions + cleanup

* try foo variation, instead

* revert change + exclude from linting

* revert + exclude from linting

* revert + exclude fron linting

* more descriptive names

* try assigning to itself

* more test clean-up

* try reverting with exclusion

* more clean-up

* revert

asv_bench/benchmarks/attrs_caching.py

@@ -15,7 +15,7 @@ def setup(self):
         self.cur_index = self.df.index
 
     def time_get_index(self):
-        self.foo = self.df.index
+        self.df.index
 
     def time_set_index(self):
         self.df.index = self.cur_index

pandas/io/formats/style.py

@@ -2902,7 +2902,7 @@ def set_properties(self, subset: Subset | None = None, **kwargs) -> Styler:
         return self.applymap(lambda x: values, subset=subset)
 
     @Substitution(subset=subset)
-    def bar(
+    def bar(  # pylint: disable=disallowed-name
         self,
         subset: Subset | None = None,
         axis: Axis | None = 0,

pandas/plotting/_core.py

@@ -1131,7 +1131,9 @@ def line(self, x=None, y=None, **kwargs) -> PlotAccessor:
     )
     @Substitution(kind="bar")
     @Appender(_bar_or_line_doc)
-    def bar(self, x=None, y=None, **kwargs) -> PlotAccessor:
+    def bar(  # pylint: disable=disallowed-name
+        self, x=None, y=None, **kwargs
+    ) -> PlotAccessor:
         """
         Vertical bar plot.
 

pandas/tests/apply/test_frame_apply.py

@@ -1516,18 +1516,18 @@ def test_aggregation_func_column_order():
         columns=("att1", "att2", "att3"),
     )
 
-    def foo(s):
+    def sum_div2(s):
         return s.sum() / 2
 
-    aggs = ["sum", foo, "count", "min"]
+    aggs = ["sum", sum_div2, "count", "min"]
     result = df.agg(aggs)
     expected = DataFrame(
         {
             "att1": [21.0, 10.5, 6.0, 1.0],
             "att2": [18.0, 9.0, 6.0, 0.0],
             "att3": [17.0, 8.5, 6.0, 0.0],
         },
-        index=["sum", "foo", "count", "min"],
+        index=["sum", "sum_div2", "count", "min"],
     )
     tm.assert_frame_equal(result, expected)
 
@@ -1548,13 +1548,13 @@ def test_nuisance_depr_passes_through_warnings():
     # sure if some other warnings were raised, they get passed through to
     # the user.
 
-    def foo(x):
+    def expected_warning(x):
         warnings.warn("Hello, World!")
         return x.sum()
 
     df = DataFrame({"a": [1, 2, 3]})
     with tm.assert_produces_warning(UserWarning, match="Hello, World!"):
-        df.agg([foo])
+        df.agg([expected_warning])
 
 
 def test_apply_type():

pandas/tests/base/test_constructors.py

@@ -43,19 +43,19 @@ def constructor(request):
 
 class TestPandasDelegate:
     class Delegator:
-        _properties = ["foo"]
-        _methods = ["bar"]
+        _properties = ["prop"]
+        _methods = ["test_method"]
 
-        def _set_foo(self, value):
-            self.foo = value
+        def _set_prop(self, value):
+            self.prop = value
 
-        def _get_foo(self):
-            return self.foo
+        def _get_prop(self):
+            return self.prop
 
-        foo = property(_get_foo, _set_foo, doc="foo property")
+        prop = property(_get_prop, _set_prop, doc="foo property")
 
-        def bar(self, *args, **kwargs):
-            """a test bar method"""
+        def test_method(self, *args, **kwargs):
+            """a test method"""
 
     class Delegate(PandasDelegate, PandasObject):
         def __init__(self, obj) -> None:
@@ -77,17 +77,17 @@ def test_invalid_delegation(self):
 
         delegate = self.Delegate(self.Delegator())
 
-        msg = "You cannot access the property foo"
+        msg = "You cannot access the property prop"
         with pytest.raises(TypeError, match=msg):
-            delegate.foo
+            delegate.prop
 
-        msg = "The property foo cannot be set"
+        msg = "The property prop cannot be set"
         with pytest.raises(TypeError, match=msg):
-            delegate.foo = 5
+            delegate.prop = 5
 
-        msg = "You cannot access the property foo"
+        msg = "You cannot access the property prop"
         with pytest.raises(TypeError, match=msg):
-            delegate.foo()
+            delegate.prop()
 
     @pytest.mark.skipif(PYPY, reason="not relevant for PyPy")
     def test_memory_usage(self):

pandas/tests/dtypes/test_inference.py

@@ -203,16 +203,16 @@ def test_is_list_like_disallow_sets(maybe_list_like):
 def test_is_list_like_recursion():
     # GH 33721
     # interpreter would crash with SIGABRT
-    def foo():
+    def list_like():
         inference.is_list_like([])
-        foo()
+        list_like()
 
     rec_limit = sys.getrecursionlimit()
     try:
         # Limit to avoid stack overflow on Windows CI
         sys.setrecursionlimit(100)
         with tm.external_error_raised(RecursionError):
-            foo()
+            list_like()
     finally:
         sys.setrecursionlimit(rec_limit)
 

pandas/tests/frame/test_subclass.py

@@ -138,11 +138,11 @@ def test_subclass_attr_err_propagation(self):
         # GH 11808
         class A(DataFrame):
             @property
-            def bar(self):
+            def nonexistence(self):
                 return self.i_dont_exist
 
         with pytest.raises(AttributeError, match=".*i_dont_exist.*"):
-            A().bar
+            A().nonexistence
 
     def test_subclass_align(self):
         # GH 12983

pandas/tests/groupby/aggregate/test_aggregate.py

@@ -283,15 +283,15 @@ def test_aggregate_item_by_item(df):
 
     aggfun_0 = lambda ser: ser.size
     result = grouped.agg(aggfun_0)
-    foo = (df.A == "foo").sum()
-    bar = (df.A == "bar").sum()
+    foosum = (df.A == "foo").sum()
+    barsum = (df.A == "bar").sum()
     K = len(result.columns)
 
     # GH5782
-    exp = Series(np.array([foo] * K), index=list("BCD"), name="foo")
+    exp = Series(np.array([foosum] * K), index=list("BCD"), name="foo")
     tm.assert_series_equal(result.xs("foo"), exp)
 
-    exp = Series(np.array([bar] * K), index=list("BCD"), name="bar")
+    exp = Series(np.array([barsum] * K), index=list("BCD"), name="bar")
     tm.assert_almost_equal(result.xs("bar"), exp)
 
     def aggfun_1(ser):
@@ -417,10 +417,10 @@ def test_more_flexible_frame_multi_function(df):
     expected = grouped.aggregate({"C": np.mean, "D": [np.mean, np.std]})
     tm.assert_frame_equal(result, expected)
 
-    def foo(x):
+    def numpymean(x):
         return np.mean(x)
 
-    def bar(x):
+    def numpystd(x):
         return np.std(x, ddof=1)
 
     # this uses column selection & renaming
@@ -430,7 +430,7 @@ def bar(x):
         grouped.aggregate(d)
 
     # But without renaming, these functions are OK
-    d = {"C": [np.mean], "D": [foo, bar]}
+    d = {"C": [np.mean], "D": [numpymean, numpystd]}
     grouped.aggregate(d)
 
 

pandas/tests/groupby/test_groupby.py

@@ -1616,7 +1616,7 @@ def freduce(group):
         assert group.name is not None
         return group.sum()
 
-    def foo(x):
+    def freducex(x):
         return freduce(x)
 
     grouped = df.groupby(grouper, group_keys=False)
@@ -1629,7 +1629,7 @@ def foo(x):
 
     grouped["C"].apply(f)
     grouped["C"].aggregate(freduce)
-    grouped["C"].aggregate([freduce, foo])
+    grouped["C"].aggregate([freduce, freducex])
     grouped["C"].transform(f)
 
 

pandas/tests/indexes/multi/test_integrity.py

@@ -233,14 +233,14 @@ def test_level_setting_resets_attributes():
 
 def test_rangeindex_fallback_coercion_bug():
     # GH 12893
-    foo = pd.DataFrame(np.arange(100).reshape((10, 10)))
-    bar = pd.DataFrame(np.arange(100).reshape((10, 10)))
-    df = pd.concat({"foo": foo.stack(), "bar": bar.stack()}, axis=1)
+    df1 = pd.DataFrame(np.arange(100).reshape((10, 10)))
+    df2 = pd.DataFrame(np.arange(100).reshape((10, 10)))
+    df = pd.concat({"df1": df1.stack(), "df2": df2.stack()}, axis=1)
     df.index.names = ["fizz", "buzz"]
 
     str(df)
     expected = pd.DataFrame(
-        {"bar": np.arange(100), "foo": np.arange(100)},
+        {"df2": np.arange(100), "df1": np.arange(100)},
         index=MultiIndex.from_product([range(10), range(10)], names=["fizz", "buzz"]),
     )
     tm.assert_frame_equal(df, expected, check_like=True)

pandas/tests/io/formats/style/test_style.py

@@ -653,10 +653,10 @@ def test_apply_dataframe_return(self, index, columns):
     )
     @pytest.mark.parametrize("axis", [0, 1])
     def test_apply_subset(self, slice_, axis, df):
-        def h(x, foo="bar"):
-            return Series(f"color: {foo}", index=x.index, name=x.name)
+        def h(x, color="bar"):
+            return Series(f"color: {color}", index=x.index, name=x.name)
 
-        result = df.style.apply(h, axis=axis, subset=slice_, foo="baz")._compute().ctx
+        result = df.style.apply(h, axis=axis, subset=slice_, color="baz")._compute().ctx
         expected = {
             (r, c): [("color", "baz")]
             for r, row in enumerate(df.index)

pandas/tests/io/test_sql.py

@@ -2181,26 +2181,26 @@ def test_connectable_issue_example(self):
         # https://github.com/pandas-dev/pandas/issues/10104
         from sqlalchemy.engine import Engine
 
-        def foo(connection):
+        def test_select(connection):
             query = "SELECT test_foo_data FROM test_foo_data"
             return sql.read_sql_query(query, con=connection)
 
-        def bar(connection, data):
+        def test_append(connection, data):
             data.to_sql(name="test_foo_data", con=connection, if_exists="append")
 
-        def baz(conn):
+        def test_connectable(conn):
             # https://github.com/sqlalchemy/sqlalchemy/commit/
             # 00b5c10846e800304caa86549ab9da373b42fa5d#r48323973
-            foo_data = foo(conn)
-            bar(conn, foo_data)
+            foo_data = test_select(conn)
+            test_append(conn, foo_data)
 
         def main(connectable):
             if isinstance(connectable, Engine):
                 with connectable.connect() as conn:
                     with conn.begin():
-                        baz(conn)
+                        test_connectable(conn)
             else:
-                baz(connectable)
+                test_connectable(connectable)
 
         assert (
             DataFrame({"test_foo_data": [0, 1, 2]}).to_sql("test_foo_data", self.conn)
@@ -2373,21 +2373,21 @@ def test_row_object_is_named_tuple(self):
         class Test(BaseModel):
             __tablename__ = "test_frame"
             id = Column(Integer, primary_key=True)
-            foo = Column(String(50))
+            string_column = Column(String(50))
 
         BaseModel.metadata.create_all(self.conn)
         Session = sessionmaker(bind=self.conn)
         with Session() as session:
-            df = DataFrame({"id": [0, 1], "foo": ["hello", "world"]})
+            df = DataFrame({"id": [0, 1], "string_column": ["hello", "world"]})
             assert (
                 df.to_sql("test_frame", con=self.conn, index=False, if_exists="replace")
                 == 2
             )
             session.commit()
-            foo = session.query(Test.id, Test.foo)
-            df = DataFrame(foo)
+            test_query = session.query(Test.id, Test.string_column)
+            df = DataFrame(test_query)
 
-        assert list(df.columns) == ["id", "foo"]
+        assert list(df.columns) == ["id", "string_column"]
 
 
 class _TestMySQLAlchemy:

pandas/tests/resample/test_period_index.py

@@ -605,9 +605,11 @@ def test_resample_with_dst_time_change(self):
 
     def test_resample_bms_2752(self):
         # GH2753
-        foo = Series(index=pd.bdate_range("20000101", "20000201"), dtype=np.float64)
-        res1 = foo.resample("BMS").mean()
-        res2 = foo.resample("BMS").mean().resample("B").mean()
+        timeseries = Series(
+            index=pd.bdate_range("20000101", "20000201"), dtype=np.float64
+        )
+        res1 = timeseries.resample("BMS").mean()
+        res2 = timeseries.resample("BMS").mean().resample("B").mean()
         assert res1.index[0] == Timestamp("20000103")
         assert res1.index[0] == res2.index[0]
 

pandas/tests/reshape/concat/test_empty.py

@@ -16,11 +16,11 @@ class TestEmptyConcat:
     def test_handle_empty_objects(self, sort):
         df = DataFrame(np.random.randn(10, 4), columns=list("abcd"))
 
-        baz = df[:5].copy()
-        baz["foo"] = "bar"
+        dfcopy = df[:5].copy()
+        dfcopy["foo"] = "bar"
         empty = df[5:5]
 
-        frames = [baz, empty, empty, df[5:]]
+        frames = [dfcopy, empty, empty, df[5:]]
         concatted = concat(frames, axis=0, sort=sort)
 
         expected = df.reindex(columns=["a", "b", "c", "d", "foo"])

pandas/tests/reshape/concat/test_series.py

@@ -120,24 +120,30 @@ def test_concat_series_name_npscalar_tuple(self, s1name, s2name):
 
     def test_concat_series_partial_columns_names(self):
         # GH10698
-        foo = Series([1, 2], name="foo")
-        bar = Series([1, 2])
-        baz = Series([4, 5])
+        named_series = Series([1, 2], name="foo")
+        unnamed_series1 = Series([1, 2])
+        unnamed_series2 = Series([4, 5])
 
-        result = concat([foo, bar, baz], axis=1)
+        result = concat([named_series, unnamed_series1, unnamed_series2], axis=1)
         expected = DataFrame(
             {"foo": [1, 2], 0: [1, 2], 1: [4, 5]}, columns=["foo", 0, 1]
         )
         tm.assert_frame_equal(result, expected)
 
-        result = concat([foo, bar, baz], axis=1, keys=["red", "blue", "yellow"])
+        result = concat(
+            [named_series, unnamed_series1, unnamed_series2],
+            axis=1,
+            keys=["red", "blue", "yellow"],
+        )
         expected = DataFrame(
             {"red": [1, 2], "blue": [1, 2], "yellow": [4, 5]},
             columns=["red", "blue", "yellow"],
         )
         tm.assert_frame_equal(result, expected)
 
-        result = concat([foo, bar, baz], axis=1, ignore_index=True)
+        result = concat(
+            [named_series, unnamed_series1, unnamed_series2], axis=1, ignore_index=True
+        )
         expected = DataFrame({0: [1, 2], 1: [1, 2], 2: [4, 5]})
         tm.assert_frame_equal(result, expected)
 

pandas/tests/reshape/test_pivot.py

@@ -2109,9 +2109,9 @@ def test_pivot_table_no_column_raises(self):
         def agg(arr):
             return np.mean(arr)
 
-        foo = DataFrame({"X": [0, 0, 1, 1], "Y": [0, 1, 0, 1], "Z": [10, 20, 30, 40]})
+        df = DataFrame({"X": [0, 0, 1, 1], "Y": [0, 1, 0, 1], "Z": [10, 20, 30, 40]})
         with pytest.raises(KeyError, match="notpresent"):
-            foo.pivot_table("notpresent", "X", "Y", aggfunc=agg)
+            df.pivot_table("notpresent", "X", "Y", aggfunc=agg)
 
     def test_pivot_table_multiindex_columns_doctest_case(self):
         # The relevant characteristic is that the call

pandas/tests/util/test_deprecate_nonkeyword_arguments.py

@@ -140,7 +140,7 @@ def test_i_signature():
 
 class Foo:
     @deprecate_nonkeyword_arguments(version=None, allowed_args=["self", "bar"])
-    def baz(self, bar=None, foobar=None):
+    def baz(self, bar=None, foobar=None):  # pylint: disable=disallowed-name
         ...