isort

27 files changed, 118 insertions, 126 deletions

diff --git a/pint/__init__.py b/pint/__init__.py
index 4f525c7..b3d4393 100644
--- a/pint/__init__.py
+++ b/pint/__init__.py
@@ -12,6 +12,8 @@
     :license: BSD, see LICENSE for more details.
 """
 
+import sys
+
 import pkg_resources
 
 from .context import Context
@@ -26,12 +28,9 @@ from .errors import (
 from .formatting import formatter
 from .measurement import Measurement
 from .quantity import Quantity
-from .registry import UnitRegistry, LazyRegistry
+from .registry import LazyRegistry, UnitRegistry
 from .unit import Unit
-from .util import pi_theorem, logger
-
-
-import sys
+from .util import logger, pi_theorem
 
 try:
     from pintpandas import PintArray, PintType
diff --git a/pint/compat.py b/pint/compat.py
index 4c20d3e..93d1a65 100644
--- a/pint/compat.py
+++ b/pint/compat.py
@@ -9,9 +9,9 @@
     :license: BSD, see LICENSE for more details.
 """
 import tokenize
+from decimal import Decimal
 from io import BytesIO
 from numbers import Number
-from decimal import Decimal
 
 
 def tokenizer(input_string):
diff --git a/pint/context.py b/pint/context.py
index 777affb..e4fff6a 100644
--- a/pint/context.py
+++ b/pint/context.py
@@ -13,8 +13,8 @@ import re
 import weakref
 from collections import ChainMap, defaultdict
 
-from .util import ParserHelper, to_units_container, SourceIterator
 from .errors import DefinitionSyntaxError
+from .util import ParserHelper, SourceIterator, to_units_container
 
 #: Regex to match the header parts of a context.
 _header_re = re.compile(
diff --git a/pint/definitions.py b/pint/definitions.py
index e6ad101..7cd4799 100644
--- a/pint/definitions.py
+++ b/pint/definitions.py
@@ -9,8 +9,8 @@
     :license: BSD, see LICENSE for more details.
 """
 
-from .converters import ScaleConverter, OffsetConverter
-from .util import UnitsContainer, _is_dim, ParserHelper
+from .converters import OffsetConverter, ScaleConverter
+from .util import ParserHelper, UnitsContainer, _is_dim
 
 
 class Definition:
diff --git a/pint/formatting.py b/pint/formatting.py
index 75f374e..224e0a2 100644
--- a/pint/formatting.py
+++ b/pint/formatting.py
@@ -11,7 +11,7 @@
 
 import re
 
-from .babel_names import _babel_units, _babel_lengths
+from .babel_names import _babel_lengths, _babel_units
 from .compat import Loc
 
 __JOIN_REG_EXP = re.compile(r"\{\d*\}")
diff --git a/pint/numpy_func.py b/pint/numpy_func.py
index 9ebb4df..6025e27 100644
--- a/pint/numpy_func.py
+++ b/pint/numpy_func.py
@@ -7,11 +7,11 @@
     :license: BSD, see LICENSE for more details.
 """
 
+import warnings
 from inspect import signature
 from itertools import chain
-import warnings
 
-from .compat import is_upcast_type, np, eq
+from .compat import eq, is_upcast_type, np
 from .errors import DimensionalityError
 from .util import iterable, sized
 
diff --git a/pint/pint_eval.py b/pint/pint_eval.py
index 2c2e02e..f768d6c 100644
--- a/pint/pint_eval.py
+++ b/pint/pint_eval.py
@@ -10,7 +10,6 @@
 """
 
 import operator
-
 import token as tokenlib
 
 from .errors import DefinitionSyntaxError
diff --git a/pint/quantity.py b/pint/quantity.py
index 4d345b4..3561e07 100644
--- a/pint/quantity.py
+++ b/pint/quantity.py
@@ -21,38 +21,30 @@ import warnings
 
 from pkg_resources.extern.packaging import version
 
-from .formatting import (
-    remove_custom_flags,
-    siunitx_format_unit,
-    ndarray_to_latex,
-    ndarray_to_latex_parts,
+from .compat import SKIP_ARRAY_FUNCTION_CHANGE_WARNING  # noqa: F401
+from .compat import (
+    NUMPY_VER,
+    BehaviorChangeWarning,
+    Loc,
+    _to_magnitude,
+    array_function_change_msg,
+    eq,
+    is_upcast_type,
+    ndarray,
+    np,
 )
+from .definitions import UnitDefinition
 from .errors import (
     DimensionalityError,
     OffsetUnitCalculusError,
     PintTypeError,
     UnitStrippedWarning,
 )
-from .definitions import UnitDefinition
-from .compat import (
-    Loc,
-    NUMPY_VER,
-    BehaviorChangeWarning,
-    ndarray,
-    np,
-    _to_magnitude,
-    is_upcast_type,
-    eq,
-    array_function_change_msg,
-)
-from .compat import SKIP_ARRAY_FUNCTION_CHANGE_WARNING  # noqa: F401
-from .util import (
-    PrettyIPython,
-    logger,
-    UnitsContainer,
-    SharedRegistryObject,
-    to_units_container,
-    infer_base_unit,
+from .formatting import (
+    ndarray_to_latex,
+    ndarray_to_latex_parts,
+    remove_custom_flags,
+    siunitx_format_unit,
 )
 from .numpy_func import (
     HANDLED_UFUNCS,
@@ -64,6 +56,14 @@ from .numpy_func import (
     op_units_output_ufuncs,
     set_units_ufuncs,
 )
+from .util import (
+    PrettyIPython,
+    SharedRegistryObject,
+    UnitsContainer,
+    infer_base_unit,
+    logger,
+    to_units_container,
+)
 
 
 class _Exception(Exception):  # pragma: no cover
diff --git a/pint/registry.py b/pint/registry.py
index d420102..68a17f8 100644
--- a/pint/registry.py
+++ b/pint/registry.py
@@ -33,54 +33,52 @@
 """
 
 import copy
-import os
-import re
-import math
 import functools
 import itertools
-import pkg_resources
+import math
+import os
+import re
+from collections import defaultdict
+from contextlib import closing, contextmanager
 from decimal import Decimal
 from fractions import Fraction
-from contextlib import contextmanager, closing
-from io import open, StringIO
-from collections import defaultdict
-from tokenize import NUMBER, NAME
+from io import StringIO, open
+from tokenize import NAME, NUMBER
 
-from . import registry_helpers
-from .context import Context, ContextChain
-from .util import (
-    getattr_maybe_raise,
-    logger,
-    pi_theorem,
-    solve_dependencies,
-    ParserHelper,
-    string_preprocessor,
-    find_connected_nodes,
-    find_shortest_path,
-    UnitsContainer,
-    _is_dim,
-    to_units_container,
-    SourceIterator,
-)
+import pkg_resources
 
+from . import registry_helpers, systems
 from .compat import tokenizer
+from .context import Context, ContextChain
+from .converters import ScaleConverter
 from .definitions import (
+    AliasDefinition,
     Definition,
-    UnitDefinition,
-    PrefixDefinition,
     DimensionDefinition,
-    AliasDefinition,
+    PrefixDefinition,
+    UnitDefinition,
 )
-from .converters import ScaleConverter
 from .errors import (
-    DimensionalityError,
-    UndefinedUnitError,
     DefinitionSyntaxError,
+    DimensionalityError,
     RedefinitionError,
+    UndefinedUnitError,
 )
-
 from .pint_eval import build_eval_tree
-from . import systems
+from .util import (
+    ParserHelper,
+    SourceIterator,
+    UnitsContainer,
+    _is_dim,
+    find_connected_nodes,
+    find_shortest_path,
+    getattr_maybe_raise,
+    logger,
+    pi_theorem,
+    solve_dependencies,
+    string_preprocessor,
+    to_units_container,
+)
 
 _BLOCK_RE = re.compile(r" |\(")
 
diff --git a/pint/registry_helpers.py b/pint/registry_helpers.py
index 9fd3f75..db2ba91 100644
--- a/pint/registry_helpers.py
+++ b/pint/registry_helpers.py
@@ -14,7 +14,7 @@ from inspect import signature
 from itertools import zip_longest
 
 from .errors import DimensionalityError
-from .util import to_units_container, UnitsContainer
+from .util import UnitsContainer, to_units_container
 
 
 def _replace_units(original_units, values_by_name):
diff --git a/pint/systems.py b/pint/systems.py
index 4ae8360..134f570 100644
--- a/pint/systems.py
+++ b/pint/systems.py
@@ -11,17 +11,18 @@
 
 import re
 
+from pint.compat import Loc
+
+from .babel_names import _babel_systems
 from .definitions import Definition, UnitDefinition
 from .errors import DefinitionSyntaxError, RedefinitionError
 from .util import (
-    to_units_container,
-    getattr_maybe_raise,
     SharedRegistryObject,
     SourceIterator,
+    getattr_maybe_raise,
     logger,
+    to_units_container,
 )
-from .babel_names import _babel_systems
-from pint.compat import Loc
 
 
 class Group(SharedRegistryObject):
diff --git a/pint/testsuite/__init__.py b/pint/testsuite/__init__.py
index ffcfbf1..1d09c7f 100644
--- a/pint/testsuite/__init__.py
+++ b/pint/testsuite/__init__.py
@@ -2,16 +2,15 @@
 
 import doctest
 import logging
+import math
 import os
 import unittest
-
 from contextlib import contextmanager
+from logging.handlers import BufferingHandler
 
+from pint import Quantity, UnitRegistry, logger
 from pint.compat import ndarray, np
-
-from pint import logger, UnitRegistry, Quantity
 from pint.testsuite.helpers import PintOutputChecker
-from logging.handlers import BufferingHandler
 
 
 class TestHandler(BufferingHandler):
@@ -155,7 +154,6 @@ def run():
     return test_runner.run(testsuite())
 
 
-import math
 
 _GLOBS = {
     "wrapping.rst": {
diff --git a/pint/testsuite/helpers.py b/pint/testsuite/helpers.py
index a6cb78c..952f059 100644
--- a/pint/testsuite/helpers.py
+++ b/pint/testsuite/helpers.py
@@ -1,15 +1,15 @@
 # -*- coding: utf-8 -*-
 
 import doctest
-from distutils.version import StrictVersion
 import re
 import unittest
+from distutils.version import StrictVersion
 
 from ..compat import (
-    HAS_NUMPY,
     HAS_BABEL,
-    HAS_UNCERTAINTIES,
+    HAS_NUMPY,
     HAS_NUMPY_ARRAY_FUNCTION,
+    HAS_UNCERTAINTIES,
     NUMPY_VER,
 )
 
diff --git a/pint/testsuite/parameterized.py b/pint/testsuite/parameterized.py
index 2396105..366b4be 100644
--- a/pint/testsuite/parameterized.py
+++ b/pint/testsuite/parameterized.py
@@ -23,11 +23,10 @@
 #        def test_eval(self, input, expected_output):
 #            self.assertEqual(eval(input), expected_output)
 
+import unittest
 from collections.abc import Callable
 from functools import wraps
 
-import unittest
-
 
 def augment_method_docstring(
     method, new_class_dict, classname, param_names, param_values, new_method
diff --git a/pint/testsuite/test_application_registry.py b/pint/testsuite/test_application_registry.py
index b0f77eb..923304c 100644
--- a/pint/testsuite/test_application_registry.py
+++ b/pint/testsuite/test_application_registry.py
@@ -11,7 +11,6 @@ from pint import (
     get_application_registry,
     set_application_registry,
 )
-
 from pint.testsuite import BaseTestCase
 from pint.testsuite.helpers import requires_uncertainties
 
diff --git a/pint/testsuite/test_babel.py b/pint/testsuite/test_babel.py
index 2210fe7..e85ec40 100644
--- a/pint/testsuite/test_babel.py
+++ b/pint/testsuite/test_babel.py
@@ -1,9 +1,10 @@
 # -*- coding: utf-8 -*-
 
-from pint.testsuite import helpers, BaseTestCase
-from pint import UnitRegistry
 import os
 
+from pint import UnitRegistry
+from pint.testsuite import BaseTestCase, helpers
+
 
 class TestBabel(BaseTestCase):
     @helpers.requires_babel()
diff --git a/pint/testsuite/test_contexts.py b/pint/testsuite/test_contexts.py
index 1bdf3ed..80103d0 100644
--- a/pint/testsuite/test_contexts.py
+++ b/pint/testsuite/test_contexts.py
@@ -3,10 +3,10 @@
 import itertools
 from collections import defaultdict
 
-from pint import UnitRegistry, DefinitionSyntaxError, DimensionalityError
+from pint import DefinitionSyntaxError, DimensionalityError, UnitRegistry
 from pint.context import Context
-from pint.util import UnitsContainer
 from pint.testsuite import QuantityTestCase
+from pint.util import UnitsContainer
 
 
 def add_ctxs(ureg):
diff --git a/pint/testsuite/test_converters.py b/pint/testsuite/test_converters.py
index 7fadc00..53d37b5 100644
--- a/pint/testsuite/test_converters.py
+++ b/pint/testsuite/test_converters.py
@@ -3,8 +3,8 @@
 import itertools
 
 from pint.compat import np
-from pint.converters import ScaleConverter, OffsetConverter, Converter
-from pint.testsuite import helpers, BaseTestCase
+from pint.converters import Converter, OffsetConverter, ScaleConverter
+from pint.testsuite import BaseTestCase, helpers
 
 
 class TestConverter(BaseTestCase):
diff --git a/pint/testsuite/test_definitions.py b/pint/testsuite/test_definitions.py
index 8f30a45..25197a8 100644
--- a/pint/testsuite/test_definitions.py
+++ b/pint/testsuite/test_definitions.py
@@ -1,16 +1,15 @@
 # -*- coding: utf-8 -*-
 
-from pint.util import UnitsContainer
-from pint.converters import ScaleConverter, OffsetConverter
+from pint.converters import OffsetConverter, ScaleConverter
 from pint.definitions import (
+    AliasDefinition,
     Definition,
+    DimensionDefinition,
     PrefixDefinition,
     UnitDefinition,
-    DimensionDefinition,
-    AliasDefinition,
 )
-
 from pint.testsuite import BaseTestCase
+from pint.util import UnitsContainer
 
 
 class TestDefinition(BaseTestCase):
diff --git a/pint/testsuite/test_errors.py b/pint/testsuite/test_errors.py
index 56ae752..920ed2e 100644
--- a/pint/testsuite/test_errors.py
+++ b/pint/testsuite/test_errors.py
@@ -5,8 +5,8 @@ import pickle
 from pint import (
     DefinitionSyntaxError,
     DimensionalityError,
-    Quantity,
     OffsetUnitCalculusError,
+    Quantity,
     RedefinitionError,
     UndefinedUnitError,
     UnitRegistry,
diff --git a/pint/testsuite/test_issues.py b/pint/testsuite/test_issues.py
index b61abf5..4913b01 100644
--- a/pint/testsuite/test_issues.py
+++ b/pint/testsuite/test_issues.py
@@ -2,15 +2,14 @@
 
 import copy
 import math
-import unittest
 import pprint
+import unittest
 
 from pint import DimensionalityError, UnitRegistry
-from pint.unit import UnitsContainer
-from pint.util import ParserHelper
-
 from pint.compat import np
 from pint.testsuite import QuantityTestCase, helpers
+from pint.unit import UnitsContainer
+from pint.util import ParserHelper
 
 
 class TestIssues(QuantityTestCase):
diff --git a/pint/testsuite/test_numpy_func.py b/pint/testsuite/test_numpy_func.py
index 573f6a4..262a2dd 100644
--- a/pint/testsuite/test_numpy_func.py
+++ b/pint/testsuite/test_numpy_func.py
@@ -1,21 +1,21 @@
 # -*- coding: utf-8 -*-
 
-import pint.numpy_func
+from unittest.mock import patch
 
+import pint.numpy_func
 from pint import DimensionalityError, OffsetUnitCalculusError
 from pint.compat import np
-from pint.testsuite.test_numpy import TestNumpyMethods
 from pint.numpy_func import (
+    _get_first_input_units,
     _is_quantity,
     _is_quantity_sequence,
-    _get_first_input_units,
     convert_to_consistent_units,
-    unwrap_and_wrap_consistent_units,
     get_op_output_unit,
     implements,
     numpy_wrap,
+    unwrap_and_wrap_consistent_units,
 )
-from unittest.mock import patch
+from pint.testsuite.test_numpy import TestNumpyMethods
 
 
 class TestNumPyFuncUtils(TestNumpyMethods):
diff --git a/pint/testsuite/test_quantity.py b/pint/testsuite/test_quantity.py
index 3433cad..070d7f0 100644
--- a/pint/testsuite/test_quantity.py
+++ b/pint/testsuite/test_quantity.py
@@ -5,13 +5,13 @@ import datetime
 import math
 import operator as op
 import warnings
+from unittest.mock import patch
 
 from pint import DimensionalityError, OffsetUnitCalculusError, UnitRegistry
-from pint.unit import UnitsContainer
 from pint.compat import BehaviorChangeWarning, np
 from pint.testsuite import QuantityTestCase, helpers
 from pint.testsuite.parameterized import ParameterizedTestCase
-from unittest.mock import patch
+from pint.unit import UnitsContainer
 
 
 class TestQuantity(QuantityTestCase):
diff --git a/pint/testsuite/test_unit.py b/pint/testsuite/test_unit.py
index e1bcf57..6327143 100644
--- a/pint/testsuite/test_unit.py
+++ b/pint/testsuite/test_unit.py
@@ -5,17 +5,17 @@ import functools
 import math
 import re
 
-from pint.compat import np
-from pint.registry import UnitRegistry, LazyRegistry
 from pint import (
     DefinitionSyntaxError,
     DimensionalityError,
     RedefinitionError,
     UndefinedUnitError,
 )
+from pint.compat import np
+from pint.registry import LazyRegistry, UnitRegistry
 from pint.testsuite import QuantityTestCase, helpers
 from pint.testsuite.parameterized import ParameterizedTestCase
-from pint.util import UnitsContainer, ParserHelper
+from pint.util import ParserHelper, UnitsContainer
 
 
 class TestUnit(QuantityTestCase):
diff --git a/pint/testsuite/test_util.py b/pint/testsuite/test_util.py
index 2d2ccd1..29848d3 100644
--- a/pint/testsuite/test_util.py
+++ b/pint/testsuite/test_util.py
@@ -4,19 +4,20 @@ import collections
 import copy
 import operator as op
 from decimal import Decimal
+
 from pint.testsuite import BaseTestCase, QuantityTestCase
 from pint.util import (
-    string_preprocessor,
-    find_shortest_path,
-    matrix_to_string,
-    transpose,
-    tokenizer,
-    find_connected_nodes,
     ParserHelper,
     UnitsContainer,
-    to_units_container,
+    find_connected_nodes,
+    find_shortest_path,
     iterable,
+    matrix_to_string,
     sized,
+    string_preprocessor,
+    to_units_container,
+    tokenizer,
+    transpose,
 )
 
 
diff --git a/pint/unit.py b/pint/unit.py
index f96e549..733208d 100644
--- a/pint/unit.py
+++ b/pint/unit.py
@@ -14,11 +14,10 @@ import locale
 import operator
 from numbers import Number
 
-from .util import PrettyIPython, UnitsContainer, SharedRegistryObject
-
 from .compat import NUMERIC_TYPES
-from .formatting import siunitx_format_unit
 from .definitions import UnitDefinition
+from .formatting import siunitx_format_unit
+from .util import PrettyIPython, SharedRegistryObject, UnitsContainer
 
 
 class Unit(PrettyIPython, SharedRegistryObject):
diff --git a/pint/util.py b/pint/util.py
index 7175a03..ca0f011 100644
--- a/pint/util.py
+++ b/pint/util.py
@@ -10,20 +10,20 @@
 """
 
 import logging
-from logging import NullHandler
 import operator
 import re
 from collections.abc import Mapping
 from decimal import Decimal
-from numbers import Number
 from fractions import Fraction
 from functools import lru_cache
+from logging import NullHandler
+from numbers import Number
 from token import NAME, NUMBER
 
-from .compat import tokenizer, NUMERIC_TYPES
+from .compat import NUMERIC_TYPES, tokenizer
+from .errors import DefinitionSyntaxError
 from .formatting import format_unit
 from .pint_eval import build_eval_tree
-from .errors import DefinitionSyntaxError
 
 logger = logging.getLogger(__name__)
 logger.addHandler(NullHandler())