solved the pylint issue of "no self argument"

pandas/tests/extension/decimal/test_decimal.py

@@ -284,6 +284,7 @@ def test_compare_array(self, data, comparison_op):
 class DecimalArrayWithoutFromSequence(DecimalArray):
     """Helper class for testing error handling in _from_sequence."""
 
+    @classmethod
     def _from_sequence(cls, scalars, dtype=None, copy=False):
         raise KeyError("For the test")
 

pandas/tests/io/test_sql.py

@@ -1612,6 +1612,7 @@ class _TestSQLAlchemy(SQLAlchemyMixIn, PandasSQLTest):
 
     flavor: str
 
+    @classmethod
     @pytest.fixture(autouse=True, scope="class")
     def setup_class(cls):
         cls.setup_import()

pandas/tests/scalar/period/test_period.py

@@ -840,6 +840,7 @@ def test_period_deprecated_freq(self):
             assert isinstance(p1, Period)
             assert isinstance(p2, Period)
 
+    @staticmethod
     def _period_constructor(bound, offset):
         return Period(
             year=bound.year,

pyproject.toml

@@ -50,7 +50,6 @@ disable = [
   "no-member",
   "no-method-argument",
   "no-name-in-module",
-  "no-self-argument",
   "no-value-for-parameter",
   "non-iterator-returned",
   "not-an-iterable",