From f8a4e08c613b9cf07eee2b7612c9f024da83a5a8 Mon Sep 17 00:00:00 2001
From: Andrew <andrewgsavage@gmail.com>
Date: Wed, 10 Apr 2024 21:14:36 +0100
Subject: [PATCH] kinfs

---
 pint/delegates/txt_defparser/plain.py |  4 ++--
 pint/facets/plain/definitions.py      |  2 +-
 pint/facets/plain/quantity.py         | 13 ++++++++++---
 pint/testsuite/test_kind.py           | 10 ++++++----
 4 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/pint/delegates/txt_defparser/plain.py b/pint/delegates/txt_defparser/plain.py
index bbffd08c1..9f9776cac 100644
--- a/pint/delegates/txt_defparser/plain.py
+++ b/pint/delegates/txt_defparser/plain.py
@@ -235,8 +235,8 @@ def from_string_and_config(
         if not (s.startswith("[") and "=" in s):
             return None
 
-        name, value, *aliases =  (p.strip() for p in s.split("="))
-        
+        name, value, *aliases = (p.strip() for p in s.split("="))
+
         preferred_unit = None
         if aliases:
             if aliases[0] == "_":
diff --git a/pint/facets/plain/definitions.py b/pint/facets/plain/definitions.py
index dde6d9938..06ceb4770 100644
--- a/pint/facets/plain/definitions.py
+++ b/pint/facets/plain/definitions.py
@@ -234,7 +234,7 @@ class DerivedDimensionDefinition(DimensionDefinition):
 
     #: reference dimensions.
     reference: UnitsContainer
-    # preferred unit 
+    # preferred unit
     preferred_unit: str | None = None
 
     @property
diff --git a/pint/facets/plain/quantity.py b/pint/facets/plain/quantity.py
index 9ea65e1c4..453e6b717 100644
--- a/pint/facets/plain/quantity.py
+++ b/pint/facets/plain/quantity.py
@@ -76,11 +76,18 @@ def wrapped(self, *args, **kwargs):
         result = f(self, *args, **kwargs)
         print(args[0].kind, self.kind, f.__name__)
         # TODO: Implement this for div, maybe move to mul and div funcs
-        if hasattr(self, "kind") and hasattr(args[0], "kind") and f.__name__ in ["_mul_div"]:
+        if (
+            hasattr(self, "kind")
+            and hasattr(args[0], "kind")
+            and f.__name__ in ["_mul_div"]
+        ):
             result_units_container = UnitsContainer({self.kind: 1, args[0].kind: 1})
             print(args[0].kind, self.kind)
             for dim in self._REGISTRY._dimensions.values():
-                if hasattr(dim, "reference") and dim.reference == result_units_container:
+                if (
+                    hasattr(dim, "reference")
+                    and dim.reference == result_units_container
+                ):
                     return result.to_kind(dim.name)
             raise ValueError(
                 f"Cannot multiply quantities with kinds {self.kind} and {args[0].kind}"
@@ -776,7 +783,7 @@ def _add_sub(self, other, op):
             raise DimensionalityError(
                 self._units, other._units, self.dimensionality, other.dimensionality
             )
-        
+
         if hasattr(self, "kind") and hasattr(other, "kind"):
             if self.kind != other.kind:
                 # TODO: Should this be a KindError?
diff --git a/pint/testsuite/test_kind.py b/pint/testsuite/test_kind.py
index b6134c373..9e6ecd801 100644
--- a/pint/testsuite/test_kind.py
+++ b/pint/testsuite/test_kind.py
@@ -1,8 +1,11 @@
-from pint import UnitRegistry
+from __future__ import annotations
+
 import pytest
 
-class TestKind():
+from pint import UnitRegistry
 
+
+class TestKind:
     def test_torque_energy(self):
         ureg = UnitRegistry()
         Q_ = ureg.Quantity
@@ -10,7 +13,7 @@ def test_torque_energy(self):
         force = Q_(1, "lbf").to_kind("[force]")
         # to_kind converts to the preferred_unit of the kind
         assert force.units == ureg.N
-        
+
         # both force and moment_arm have kind defined.
         # Torque is defined in default_en:
         # [torque] = [force] * [moment_arm]
@@ -29,4 +32,3 @@ def test_torque_energy(self):
         # Torque is not energy so cannot be added
         with pytest.raises(ValueError):
             energy + torque
-        
\ No newline at end of file