apply ruff fixes

Author: cmnemoi

testing/python/approx.py

@@ -1,18 +1,21 @@
 # mypy: allow-untyped-defs
 from __future__ import annotations
 
-import decimal
-import operator
-import re
 from contextlib import contextmanager
+import decimal
 from decimal import Decimal
 from fractions import Fraction
-from math import inf, nan, sqrt
-from operator import eq, ne
+from math import inf
+from math import nan
+from math import sqrt
+import operator
+from operator import eq
+from operator import ne
+import re
 
-import pytest
 from _pytest.pytester import Pytester
 from _pytest.python_api import _recursive_sequence_map
+import pytest
 from pytest import approx