diff --git a/setup.py b/setup.py
index 880cb365..d6ad5b61 100644
--- a/setup.py
+++ b/setup.py
@@ -21,14 +21,14 @@
 
 import os
 import sys
-
 from distutils.errors import CCompilerError
 from distutils.errors import DistutilsExecError
 from distutils.errors import DistutilsPlatformError
 
-from setuptools import setup, Extension
-from setuptools.command.build_ext import build_ext
+from setuptools import Extension
 from setuptools import find_packages
+from setuptools import setup
+from setuptools.command.build_ext import build_ext
 
 
 class optional_build_ext(build_ext):
diff --git a/src/zope/interface/__init__.py b/src/zope/interface/__init__.py
index 17a272f1..8be812dd 100644
--- a/src/zope/interface/__init__.py
+++ b/src/zope/interface/__init__.py
@@ -53,11 +53,14 @@ def meth(arg1, arg2):
 from zope.interface.interface import Interface
 from zope.interface.interface import _wire
 
+
 # Need to actually get the interface elements to implement the right interfaces
 _wire()
 del _wire
 
 from zope.interface.declarations import Declaration
+# The following are to make spec pickles cleaner
+from zope.interface.declarations import Provides
 from zope.interface.declarations import alsoProvides
 from zope.interface.declarations import classImplements
 from zope.interface.declarations import classImplementsFirst
@@ -72,20 +75,14 @@ def meth(arg1, arg2):
 from zope.interface.declarations import noLongerProvides
 from zope.interface.declarations import providedBy
 from zope.interface.declarations import provider
-
 from zope.interface.exceptions import Invalid
-
 from zope.interface.interface import Attribute
 from zope.interface.interface import interfacemethod
 from zope.interface.interface import invariant
 from zope.interface.interface import taggedValue
-
-# The following are to make spec pickles cleaner
-from zope.interface.declarations import Provides
-
-
 from zope.interface.interfaces import IInterfaceDeclaration
 
+
 moduleProvides(IInterfaceDeclaration)
 
 __all__ = ('Interface', 'Attribute') + tuple(IInterfaceDeclaration)
diff --git a/src/zope/interface/_flatten.py b/src/zope/interface/_flatten.py
index a80c2de4..68b490db 100644
--- a/src/zope/interface/_flatten.py
+++ b/src/zope/interface/_flatten.py
@@ -17,6 +17,7 @@
 """
 from zope.interface import Declaration
 
+
 def _flatten(implements, include_None=0):
 
     try:
diff --git a/src/zope/interface/adapter.py b/src/zope/interface/adapter.py
index dbff0d19..b02f19d5 100644
--- a/src/zope/interface/adapter.py
+++ b/src/zope/interface/adapter.py
@@ -16,14 +16,14 @@
 import itertools
 import weakref
 
+from zope.interface import Interface
 from zope.interface import implementer
 from zope.interface import providedBy
-from zope.interface import Interface
 from zope.interface import ro
-from zope.interface.interfaces import IAdapterRegistry
-
 from zope.interface._compat import _normalize_name
 from zope.interface._compat import _use_c_impl
+from zope.interface.interfaces import IAdapterRegistry
+
 
 __all__ = [
     'AdapterRegistry',
diff --git a/src/zope/interface/advice.py b/src/zope/interface/advice.py
index 54e356e6..5a8e3777 100644
--- a/src/zope/interface/advice.py
+++ b/src/zope/interface/advice.py
@@ -27,6 +27,7 @@
 
 from types import FunctionType
 
+
 __all__ = [
     'determineMetaclass',
     'getFrameInfo',
@@ -36,6 +37,7 @@
 
 import sys
 
+
 def getFrameInfo(frame):
     """Return (kind,module,locals,globals) for a frame
 
diff --git a/src/zope/interface/common/__init__.py b/src/zope/interface/common/__init__.py
index 56f4566a..f308f9ed 100644
--- a/src/zope/interface/common/__init__.py
+++ b/src/zope/interface/common/__init__.py
@@ -13,11 +13,12 @@
 import itertools
 from types import FunctionType
 
-from zope.interface import classImplements
 from zope.interface import Interface
-from zope.interface.interface import fromFunction
+from zope.interface import classImplements
 from zope.interface.interface import InterfaceClass
 from zope.interface.interface import _decorator_non_return
+from zope.interface.interface import fromFunction
+
 
 __all__ = [
     # Nothing public here.
diff --git a/src/zope/interface/common/builtins.py b/src/zope/interface/common/builtins.py
index 17090e4a..6e13e064 100644
--- a/src/zope/interface/common/builtins.py
+++ b/src/zope/interface/common/builtins.py
@@ -19,10 +19,10 @@
 """
 
 from zope.interface import classImplements
-
 from zope.interface.common import collections
-from zope.interface.common import numbers
 from zope.interface.common import io
+from zope.interface.common import numbers
+
 
 __all__ = [
     'IList',
diff --git a/src/zope/interface/common/collections.py b/src/zope/interface/common/collections.py
index c5490282..3c751c05 100644
--- a/src/zope/interface/common/collections.py
+++ b/src/zope/interface/common/collections.py
@@ -31,17 +31,17 @@
 """
 
 import sys
-
 from abc import ABCMeta
-from collections import abc
 from collections import OrderedDict
-from collections import UserList
 from collections import UserDict
+from collections import UserList
 from collections import UserString
+from collections import abc
 
 from zope.interface.common import ABCInterface
 from zope.interface.common import optional
 
+
 # pylint:disable=inherit-non-class,
 # pylint:disable=no-self-argument,no-method-argument
 # pylint:disable=unexpected-special-method-signature
diff --git a/src/zope/interface/common/idatetime.py b/src/zope/interface/common/idatetime.py
index 82f0059c..aeda07aa 100644
--- a/src/zope/interface/common/idatetime.py
+++ b/src/zope/interface/common/idatetime.py
@@ -14,9 +14,14 @@
 This module is called idatetime because if it were called datetime the import
 of the real datetime would fail.
 """
-from datetime import timedelta, date, datetime, time, tzinfo
-
-from zope.interface import Interface, Attribute
+from datetime import date
+from datetime import datetime
+from datetime import time
+from datetime import timedelta
+from datetime import tzinfo
+
+from zope.interface import Attribute
+from zope.interface import Interface
 from zope.interface import classImplements
 
 
diff --git a/src/zope/interface/common/interfaces.py b/src/zope/interface/common/interfaces.py
index 70bd294f..688e323a 100644
--- a/src/zope/interface/common/interfaces.py
+++ b/src/zope/interface/common/interfaces.py
@@ -16,6 +16,7 @@
 from zope.interface import Interface
 from zope.interface import classImplements
 
+
 class IException(Interface):
     "Interface for `Exception`"
 classImplements(Exception, IException)
diff --git a/src/zope/interface/common/io.py b/src/zope/interface/common/io.py
index 0d6f3bad..89f1ba80 100644
--- a/src/zope/interface/common/io.py
+++ b/src/zope/interface/common/io.py
@@ -23,6 +23,7 @@
 
 from zope.interface.common import ABCInterface
 
+
 # pylint:disable=inherit-non-class,
 # pylint:disable=no-member
 
diff --git a/src/zope/interface/common/mapping.py b/src/zope/interface/common/mapping.py
index d0433335..eb9a2900 100644
--- a/src/zope/interface/common/mapping.py
+++ b/src/zope/interface/common/mapping.py
@@ -31,6 +31,7 @@
 from zope.interface import Interface
 from zope.interface.common import collections
 
+
 class IItemMapping(Interface):
     """Simplest readable mapping object
     """
diff --git a/src/zope/interface/common/sequence.py b/src/zope/interface/common/sequence.py
index 5edc73dc..738f76d4 100644
--- a/src/zope/interface/common/sequence.py
+++ b/src/zope/interface/common/sequence.py
@@ -33,6 +33,7 @@
 from zope.interface import Interface
 from zope.interface.common import collections
 
+
 class IMinimalSequence(collections.IIterable):
     """Most basic sequence interface.
 
diff --git a/src/zope/interface/common/tests/__init__.py b/src/zope/interface/common/tests/__init__.py
index 0503495c..5b25828c 100644
--- a/src/zope/interface/common/tests/__init__.py
+++ b/src/zope/interface/common/tests/__init__.py
@@ -12,11 +12,10 @@
 
 import unittest
 
-from zope.interface.verify import verifyClass
-from zope.interface.verify import verifyObject
-
 from zope.interface.common import ABCInterface
 from zope.interface.common import ABCInterfaceClass
+from zope.interface.verify import verifyClass
+from zope.interface.verify import verifyObject
 
 
 def iter_abc_interfaces(predicate=lambda iface: True):
@@ -72,9 +71,9 @@ def test(self, stdlib_class=stdlib_class, iface=iface):
             setattr(cls, name, test)
 
             def test_ro(self, stdlib_class=stdlib_class, iface=iface):
-                from zope.interface import ro
-                from zope.interface import implementedBy
                 from zope.interface import Interface
+                from zope.interface import implementedBy
+                from zope.interface import ro
                 self.assertEqual(
                     tuple(ro.ro(iface, strict=True)),
                     iface.__sro__)
diff --git a/src/zope/interface/common/tests/basemapping.py b/src/zope/interface/common/tests/basemapping.py
index 6fe91a1c..f509e855 100644
--- a/src/zope/interface/common/tests/basemapping.py
+++ b/src/zope/interface/common/tests/basemapping.py
@@ -15,6 +15,7 @@
 """
 from operator import __getitem__
 
+
 def testIReadMapping(self, inst, state, absent):
     for key in state:
         self.assertEqual(inst[key], state[key])
diff --git a/src/zope/interface/common/tests/test_collections.py b/src/zope/interface/common/tests/test_collections.py
index 2bd6f506..44ff2dad 100644
--- a/src/zope/interface/common/tests/test_collections.py
+++ b/src/zope/interface/common/tests/test_collections.py
@@ -13,26 +13,20 @@
 
 import array
 import unittest
+from collections import OrderedDict
 from collections import abc
 from collections import deque
-from collections import OrderedDict
-
-
 from types import MappingProxyType
 
 from zope.interface import Invalid
-
-
+from zope.interface._compat import PYPY
 # Note that importing z.i.c.collections does work on import.
 from zope.interface.common import collections
 
-
-from zope.interface._compat import PYPY
-
-
-from . import add_abc_interface_tests
 from . import VerifyClassMixin
 from . import VerifyObjectMixin
+from . import add_abc_interface_tests
+
 
 class TestVerifyClass(VerifyClassMixin, unittest.TestCase):
 
diff --git a/src/zope/interface/common/tests/test_idatetime.py b/src/zope/interface/common/tests/test_idatetime.py
index 496a5c94..9550daa1 100644
--- a/src/zope/interface/common/tests/test_idatetime.py
+++ b/src/zope/interface/common/tests/test_idatetime.py
@@ -15,13 +15,24 @@
 """
 
 import unittest
+from datetime import date
+from datetime import datetime
+from datetime import time
+from datetime import timedelta
+from datetime import tzinfo
+
+from zope.interface.common.idatetime import IDate
+from zope.interface.common.idatetime import IDateClass
+from zope.interface.common.idatetime import IDateTime
+from zope.interface.common.idatetime import IDateTimeClass
+from zope.interface.common.idatetime import ITime
+from zope.interface.common.idatetime import ITimeClass
+from zope.interface.common.idatetime import ITimeDelta
+from zope.interface.common.idatetime import ITimeDeltaClass
+from zope.interface.common.idatetime import ITZInfo
+from zope.interface.verify import verifyClass
+from zope.interface.verify import verifyObject
 
-from zope.interface.verify import verifyObject, verifyClass
-from zope.interface.common.idatetime import ITimeDelta, ITimeDeltaClass
-from zope.interface.common.idatetime import IDate, IDateClass
-from zope.interface.common.idatetime import IDateTime, IDateTimeClass
-from zope.interface.common.idatetime import ITime, ITimeClass, ITZInfo
-from datetime import timedelta, date, datetime, time, tzinfo
 
 class TestDateTimeInterfaces(unittest.TestCase):
 
diff --git a/src/zope/interface/common/tests/test_import_interfaces.py b/src/zope/interface/common/tests/test_import_interfaces.py
index fe3766f6..67d14487 100644
--- a/src/zope/interface/common/tests/test_import_interfaces.py
+++ b/src/zope/interface/common/tests/test_import_interfaces.py
@@ -13,6 +13,7 @@
 ##############################################################################
 import unittest
 
+
 class TestInterfaceImport(unittest.TestCase):
 
     def test_import(self):
diff --git a/src/zope/interface/common/tests/test_io.py b/src/zope/interface/common/tests/test_io.py
index 0e8e74d6..77da4fd3 100644
--- a/src/zope/interface/common/tests/test_io.py
+++ b/src/zope/interface/common/tests/test_io.py
@@ -11,15 +11,15 @@
 ##############################################################################
 
 
-import unittest
 import io as abc
+import unittest
 
 # Note that importing z.i.c.io does work on import.
 from zope.interface.common import io
 
-from . import add_abc_interface_tests
 from . import VerifyClassMixin
 from . import VerifyObjectMixin
+from . import add_abc_interface_tests
 
 
 class TestVerifyClass(VerifyClassMixin,
diff --git a/src/zope/interface/common/tests/test_numbers.py b/src/zope/interface/common/tests/test_numbers.py
index abf96958..c6282a3a 100644
--- a/src/zope/interface/common/tests/test_numbers.py
+++ b/src/zope/interface/common/tests/test_numbers.py
@@ -11,15 +11,15 @@
 ##############################################################################
 
 
-import unittest
 import numbers as abc
+import unittest
 
 # Note that importing z.i.c.numbers does work on import.
 from zope.interface.common import numbers
 
-from . import add_abc_interface_tests
 from . import VerifyClassMixin
 from . import VerifyObjectMixin
+from . import add_abc_interface_tests
 
 
 class TestVerifyClass(VerifyClassMixin,
diff --git a/src/zope/interface/declarations.py b/src/zope/interface/declarations.py
index 61e25439..87e62520 100644
--- a/src/zope/interface/declarations.py
+++ b/src/zope/interface/declarations.py
@@ -27,17 +27,18 @@ class implements (that instances of the class provides).
 __docformat__ = 'restructuredtext'
 
 import sys
+import weakref
 from types import FunctionType
 from types import MethodType
 from types import ModuleType
-import weakref
 
+from zope.interface._compat import _use_c_impl
 from zope.interface.interface import Interface
 from zope.interface.interface import InterfaceClass
-from zope.interface.interface import SpecificationBase
-from zope.interface.interface import Specification
 from zope.interface.interface import NameAndModuleComparisonMixin
-from zope.interface._compat import _use_c_impl
+from zope.interface.interface import Specification
+from zope.interface.interface import SpecificationBase
+
 
 __all__ = [
     # None. The public APIs of this module are
diff --git a/src/zope/interface/document.py b/src/zope/interface/document.py
index 84cfaa0b..2595c569 100644
--- a/src/zope/interface/document.py
+++ b/src/zope/interface/document.py
@@ -18,6 +18,7 @@
 """
 import zope.interface
 
+
 __all__ = [
     'asReStructuredText',
     'asStructuredText',
diff --git a/src/zope/interface/exceptions.py b/src/zope/interface/exceptions.py
index d5c234a6..0612eb23 100644
--- a/src/zope/interface/exceptions.py
+++ b/src/zope/interface/exceptions.py
@@ -191,7 +191,7 @@ def mess(self):
     def __implementation_str(impl):
         # It could be a callable or some arbitrary object, we don't
         # know yet.
-        import inspect # Inspect is a heavy-weight dependency, lots of imports
+        import inspect  # Inspect is a heavy-weight dependency, lots of imports
         try:
             sig = inspect.signature
             formatsig = str
diff --git a/src/zope/interface/interface.py b/src/zope/interface/interface.py
index 02a512e3..8143daf3 100644
--- a/src/zope/interface/interface.py
+++ b/src/zope/interface/interface.py
@@ -15,15 +15,16 @@
 """
 # pylint:disable=protected-access
 import sys
-from types import MethodType
-from types import FunctionType
 import weakref
+from types import FunctionType
+from types import MethodType
 from typing import Union
 
+from zope.interface import ro
 from zope.interface._compat import _use_c_impl
 from zope.interface.exceptions import Invalid
 from zope.interface.ro import ro as calculate_ro
-from zope.interface import ro
+
 
 __all__ = [
     # Most of the public API from this module is directly exported
@@ -1130,8 +1131,9 @@ def _wire():
 # pylint:disable=wrong-import-position
 from zope.interface.declarations import implementedBy
 from zope.interface.declarations import providedBy
-from zope.interface.exceptions import InvalidInterface
 from zope.interface.exceptions import BrokenImplementation
+from zope.interface.exceptions import InvalidInterface
+
 
 # This ensures that ``Interface`` winds up in the flattened()
 # list of the immutable declaration. It correctly overrides changed()
diff --git a/src/zope/interface/interfaces.py b/src/zope/interface/interfaces.py
index 2b67ce1a..0d315cb6 100644
--- a/src/zope/interface/interfaces.py
+++ b/src/zope/interface/interfaces.py
@@ -15,9 +15,10 @@
 """
 __docformat__ = 'restructuredtext'
 
+from zope.interface.declarations import implementer
 from zope.interface.interface import Attribute
 from zope.interface.interface import Interface
-from zope.interface.declarations import implementer
+
 
 __all__ = [
     'ComponentLookupError',
diff --git a/src/zope/interface/registry.py b/src/zope/interface/registry.py
index 292499db..a6a24fdd 100644
--- a/src/zope/interface/registry.py
+++ b/src/zope/interface/registry.py
@@ -15,27 +15,28 @@
 """
 from collections import defaultdict
 
+
 try:
     from zope.event import notify
 except ImportError: # pragma: no cover
     def notify(*arg, **kw): pass
 
-from zope.interface.interfaces import ISpecification
+from zope.interface.adapter import AdapterRegistry
+from zope.interface.declarations import implementedBy
+from zope.interface.declarations import implementer
+from zope.interface.declarations import implementer_only
+from zope.interface.declarations import providedBy
+from zope.interface.interface import Interface
 from zope.interface.interfaces import ComponentLookupError
 from zope.interface.interfaces import IAdapterRegistration
 from zope.interface.interfaces import IComponents
 from zope.interface.interfaces import IHandlerRegistration
+from zope.interface.interfaces import ISpecification
 from zope.interface.interfaces import ISubscriptionAdapterRegistration
 from zope.interface.interfaces import IUtilityRegistration
 from zope.interface.interfaces import Registered
 from zope.interface.interfaces import Unregistered
 
-from zope.interface.interface import Interface
-from zope.interface.declarations import implementedBy
-from zope.interface.declarations import implementer
-from zope.interface.declarations import implementer_only
-from zope.interface.declarations import providedBy
-from zope.interface.adapter import AdapterRegistry
 
 __all__ = [
     # Components is public API, but
diff --git a/src/zope/interface/ro.py b/src/zope/interface/ro.py
index 17468e92..52986483 100644
--- a/src/zope/interface/ro.py
+++ b/src/zope/interface/ro.py
@@ -454,6 +454,7 @@ def _guess_next_base(self, base_tree_remaining):
         if self.leaf not in bad_iros:
             if bad_iros == ():
                 import weakref
+
                 # This is a race condition, but it doesn't matter much.
                 bad_iros = C3.BAD_IROS = weakref.WeakKeyDictionary()
             bad_iros[self.leaf] = t = (
@@ -527,6 +528,7 @@ def __move(self, from_, to_, chunk, operation):
     def _generate_report(self):
         if self._c3_report is None:
             import difflib
+
             # The opcodes we get describe how to turn 'a' into 'b'. So
             # the old one (legacy) needs to be first ('a')
             matcher = difflib.SequenceMatcher(None, self.legacy_ro, self.c3_ro)
diff --git a/src/zope/interface/tests/advisory_testing.py b/src/zope/interface/tests/advisory_testing.py
index bed9dd86..b8021454 100644
--- a/src/zope/interface/tests/advisory_testing.py
+++ b/src/zope/interface/tests/advisory_testing.py
@@ -15,6 +15,7 @@
 
 from zope.interface.advice import getFrameInfo
 
+
 my_globals = globals()
 
 ClassicClass = None
diff --git a/src/zope/interface/tests/dummy.py b/src/zope/interface/tests/dummy.py
index 6b142ff6..ffc27e53 100644
--- a/src/zope/interface/tests/dummy.py
+++ b/src/zope/interface/tests/dummy.py
@@ -16,6 +16,7 @@
 from zope.interface import moduleProvides
 from zope.interface.tests.idummy import IDummyModule
 
+
 moduleProvides(IDummyModule)
 
 def bar(baz):
diff --git a/src/zope/interface/tests/idummy.py b/src/zope/interface/tests/idummy.py
index 1e34fe0f..7855ce7d 100644
--- a/src/zope/interface/tests/idummy.py
+++ b/src/zope/interface/tests/idummy.py
@@ -15,6 +15,7 @@
 """
 from zope.interface import Interface
 
+
 class IDummyModule(Interface):
     """ Dummy interface for unit tests.
     """
diff --git a/src/zope/interface/tests/m1.py b/src/zope/interface/tests/m1.py
index d311fb40..c969c1a5 100644
--- a/src/zope/interface/tests/m1.py
+++ b/src/zope/interface/tests/m1.py
@@ -13,7 +13,9 @@
 ##############################################################################
 """Test module that declares an interface
 """
-from zope.interface import Interface, moduleProvides
+from zope.interface import Interface
+from zope.interface import moduleProvides
+
 
 class I1(Interface): pass
 class I2(Interface): pass
diff --git a/src/zope/interface/tests/test_adapter.py b/src/zope/interface/tests/test_adapter.py
index 203ba813..45809cb1 100644
--- a/src/zope/interface/tests/test_adapter.py
+++ b/src/zope/interface/tests/test_adapter.py
@@ -17,6 +17,7 @@
 
 from zope.interface.tests import OptimizationTestMixin
 
+
 # pylint:disable=inherit-non-class,protected-access,too-many-lines
 # pylint:disable=attribute-defined-outside-init,blacklisted-name
 
@@ -874,7 +875,7 @@ def assertLeafIdentity(self, leaf1, leaf2):
 class LookupBaseFallbackTests(unittest.TestCase):
 
     def _getFallbackClass(self):
-        from zope.interface.adapter import LookupBaseFallback # pylint:disable=no-name-in-module
+        from zope.interface.adapter import LookupBaseFallback
         return LookupBaseFallback
 
     _getTargetClass = _getFallbackClass
@@ -1211,7 +1212,7 @@ def _getTargetClass(self):
 class VerifyingBaseFallbackTests(unittest.TestCase):
 
     def _getFallbackClass(self):
-        from zope.interface.adapter import VerifyingBaseFallback # pylint:disable=no-name-in-module
+        from zope.interface.adapter import VerifyingBaseFallback
         return VerifyingBaseFallback
 
     _getTargetClass = _getFallbackClass
@@ -2002,8 +2003,8 @@ def _makeOne(self, *args, **kw):
         return self._getTargetClass()(*args, **kw)
 
     def test_verify_object_provides_IAdapterRegistry(self):
-        from zope.interface.verify import verifyObject
         from zope.interface.interfaces import IAdapterRegistry
+        from zope.interface.verify import verifyObject
         registry = self._makeOne()
         verifyObject(IAdapterRegistry, registry)
 
diff --git a/src/zope/interface/tests/test_advice.py b/src/zope/interface/tests/test_advice.py
index caf5ee7b..a5432011 100644
--- a/src/zope/interface/tests/test_advice.py
+++ b/src/zope/interface/tests/test_advice.py
@@ -25,8 +25,8 @@
 Visit the PEAK home page at http://peak.telecommunity.com for more information.
 """
 
-import unittest
 import sys
+import unittest
 
 
 class FrameInfoTest(unittest.TestCase):
diff --git a/src/zope/interface/tests/test_declarations.py b/src/zope/interface/tests/test_declarations.py
index c17e323c..a7f85463 100644
--- a/src/zope/interface/tests/test_declarations.py
+++ b/src/zope/interface/tests/test_declarations.py
@@ -15,9 +15,11 @@
 """
 import unittest
 
-from zope.interface.tests import OptimizationTestMixin
 from zope.interface.tests import MissingSomeAttrs
-from zope.interface.tests.test_interface import NameAndModuleComparisonTestsMixin
+from zope.interface.tests import OptimizationTestMixin
+from zope.interface.tests.test_interface import \
+    NameAndModuleComparisonTestsMixin
+
 
 # pylint:disable=inherit-non-class,too-many-lines,protected-access
 # pylint:disable=blacklisted-name,attribute-defined-outside-init
@@ -290,9 +292,9 @@ def test___add___overlapping_interface(self):
         # used to be wrong ([IBase, IDerived] instead of
         # the other way).
         from zope.interface import Interface
+        from zope.interface import ro
         from zope.interface.interface import InterfaceClass
         from zope.interface.tests.test_ro import C3Setting
-        from zope.interface import ro
 
         IBase = InterfaceClass('IBase')
         IDerived = InterfaceClass('IDerived', (IBase,))
@@ -313,8 +315,8 @@ def test___add___overlapping_interface_implementedBy(self):
         from zope.interface import Interface
         from zope.interface import implementedBy
         from zope.interface import implementer
-        from zope.interface.tests.test_ro import C3Setting
         from zope.interface import ro
+        from zope.interface.tests.test_ro import C3Setting
 
         class IBase(Interface):
             pass
@@ -790,8 +792,8 @@ class Derived:
         sup = super(Derived, Derived)
         self.assertEqual(list(self._callFUT(sup)), [])
     def test_super_multi_level_multi_inheritance(self):
-        from zope.interface.declarations import implementer
         from zope.interface import Interface
+        from zope.interface.declarations import implementer
 
         class IBase(Interface):
             pass
@@ -1056,8 +1058,8 @@ def _callFUT(self, *args, **kw):
         return _implements_advice(*args, **kw)
 
     def test_no_existing_implements(self):
-        from zope.interface.declarations import classImplements
         from zope.interface.declarations import Implements
+        from zope.interface.declarations import classImplements
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass('IFoo')
         class Foo:
@@ -1108,6 +1110,7 @@ def test_does_not_leak_on_unique_classes(self):
         # traversed or cleared.
         # https://github.com/zopefoundation/zope.interface/issues/216
         import gc
+
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass('IFoo')
 
@@ -1184,7 +1187,7 @@ class Foo:
         self.assertEqual(list(spec), [IFoo])
 
     def test___reduce__(self):
-        from zope.interface.declarations import Provides # the function
+        from zope.interface.declarations import Provides  # the function
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
         class Foo:
@@ -1229,8 +1232,8 @@ def _do_calculate_ro(self, base_mros):
     def test_overlapping_interfaces_corrected(self):
         # Giving Provides(cls, IFace), where IFace is already
         # provided by cls, doesn't produce invalid resolution orders.
-        from zope.interface import implementedBy
         from zope.interface import Interface
+        from zope.interface import implementedBy
         from zope.interface import implementer
 
         class IBase(Interface):
@@ -1287,6 +1290,7 @@ def test__repr__module_provides_typical_use(self):
     def test__repr__module_after_pickle(self):
         # It doesn't matter, these objects can't be pickled.
         import pickle
+
         from zope.interface.tests import dummy
         provides = dummy.__provides__ # pylint:disable=no-member
         for proto in range(pickle.HIGHEST_PROTOCOL + 1):
@@ -1295,10 +1299,11 @@ def test__repr__module_after_pickle(self):
 
     def test__repr__directlyProvides_module(self):
         import sys
-        from zope.interface.tests import dummy
-        from zope.interface.declarations import directlyProvides
+
         from zope.interface.declarations import alsoProvides
+        from zope.interface.declarations import directlyProvides
         from zope.interface.interface import InterfaceClass
+        from zope.interface.tests import dummy
 
         IFoo = InterfaceClass('IFoo')
         IBar = InterfaceClass('IBar')
@@ -1339,8 +1344,8 @@ def test__repr__directlyProvides_module(self):
         )
 
     def test__repr__module_provides_cached_shared(self):
-        from zope.interface.interface import InterfaceClass
         from zope.interface.declarations import ModuleType
+        from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
 
         inst = self._makeOne(ModuleType, IFoo)
@@ -1417,9 +1422,9 @@ class Foo:
         )
 
     def test__repr__providedBy_alsoProvides(self):
+        from zope.interface.declarations import alsoProvides
         from zope.interface.declarations import implementer
         from zope.interface.declarations import providedBy
-        from zope.interface.declarations import alsoProvides
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
         IBar = InterfaceClass("IBar")
@@ -1534,8 +1539,8 @@ class Foo:
         self.assertEqual(list(obj.__provides__), [IFoo]) # pylint:disable=no-member
 
     def test_w_existing_provides(self):
-        from zope.interface.declarations import directlyProvides
         from zope.interface.declarations import ProvidesClass
+        from zope.interface.declarations import directlyProvides
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
         IBar = InterfaceClass("IBar")
@@ -1704,8 +1709,8 @@ def _do_calculate_ro(self, base_mros):
     def test_overlapping_interfaces_corrected(self):
         # Giving ClassProvides(cls, metaclass, IFace), where IFace is already
         # provided by metacls, doesn't produce invalid resolution orders.
-        from zope.interface import implementedBy
         from zope.interface import Interface
+        from zope.interface import implementedBy
         from zope.interface import implementer
 
         class IBase(Interface):
@@ -1772,8 +1777,8 @@ def test__repr__duplicate_names(self):
         )
 
     def test__repr__implementedBy(self):
-        from zope.interface.declarations import implementer
         from zope.interface.declarations import implementedBy
+        from zope.interface.declarations import implementer
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
 
@@ -1789,6 +1794,7 @@ class Foo:
 
     def test__repr__implementedBy_generic_callable(self):
         from zope.interface.declarations import implementedBy
+
         # We can't get a __name__ by default, so we get a
         # module name and a question mark
         class Callable:
@@ -2204,8 +2210,8 @@ class Derived:
 
     def test_super_when_object_directly_provides(self):
         from zope.interface import Interface
-        from zope.interface.declarations import implementer
         from zope.interface.declarations import directlyProvides
+        from zope.interface.declarations import implementer
 
         class IBase(Interface):
             pass
@@ -2232,8 +2238,8 @@ class Derived(Base):
         self.assertEqual(list(fut), [IBase])
 
     def test_super_multi_level_multi_inheritance(self):
-        from zope.interface.declarations import implementer
         from zope.interface import Interface
+        from zope.interface.declarations import implementer
 
         class IBase(Interface):
             pass
@@ -2306,8 +2312,8 @@ class ObjectSpecificationDescriptorFallbackTests(unittest.TestCase):
 
     def _getFallbackClass(self):
         # pylint:disable=no-name-in-module
-        from zope.interface.declarations \
-            import ObjectSpecificationDescriptorFallback
+        from zope.interface.declarations import \
+            ObjectSpecificationDescriptorFallback
         return ObjectSpecificationDescriptorFallback
 
     _getTargetClass = _getFallbackClass
@@ -2326,8 +2332,8 @@ class Foo:
         self.assertEqual(list(Foo.__providedBy__), [IFoo])
 
     def test_accessed_via_inst_wo_provides(self):
-        from zope.interface.declarations import implementer
         from zope.interface.declarations import Provides
+        from zope.interface.declarations import implementer
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
         IBar = InterfaceClass("IBar")
@@ -2340,9 +2346,9 @@ class Foo:
         self.assertEqual(list(foo.__providedBy__), [IFoo])
 
     def test_accessed_via_inst_w_provides(self):
+        from zope.interface.declarations import Provides
         from zope.interface.declarations import directlyProvides
         from zope.interface.declarations import implementer
-        from zope.interface.declarations import Provides
         from zope.interface.interface import InterfaceClass
         IFoo = InterfaceClass("IFoo")
         IBar = InterfaceClass("IBar")
diff --git a/src/zope/interface/tests/test_document.py b/src/zope/interface/tests/test_document.py
index f00e6311..2a954970 100644
--- a/src/zope/interface/tests/test_document.py
+++ b/src/zope/interface/tests/test_document.py
@@ -51,6 +51,7 @@ class IEmpty(Interface):
 
     def test_asStructuredText_empty_with_multiline_docstring(self):
         from zope.interface import Interface
+
         # In Python 3.13+, compiler strips indents from docstrings
         indent = " " * 12 if sys.version_info < (3, 13) else ""
 
@@ -278,6 +279,7 @@ class IEmpty(Interface):
 
     def test_asReStructuredText_empty_with_multiline_docstring(self):
         from zope.interface import Interface
+
         # In Python 3.13+, compiler strips indents from docstrings
         indent = " " * 12 if sys.version_info < (3, 13) else ""
 
diff --git a/src/zope/interface/tests/test_element.py b/src/zope/interface/tests/test_element.py
index eb003cda..b47b3b5a 100644
--- a/src/zope/interface/tests/test_element.py
+++ b/src/zope/interface/tests/test_element.py
@@ -15,8 +15,10 @@
 """
 
 import unittest
+
 from zope.interface.interface import Element
 
+
 class TestElement(unittest.TestCase):
 
     def test_taggedValues(self):
diff --git a/src/zope/interface/tests/test_exceptions.py b/src/zope/interface/tests/test_exceptions.py
index dc22c71d..7b683912 100644
--- a/src/zope/interface/tests/test_exceptions.py
+++ b/src/zope/interface/tests/test_exceptions.py
@@ -15,6 +15,7 @@
 """
 import unittest
 
+
 def _makeIface():
     from zope.interface import Interface
     class IDummy(Interface):
diff --git a/src/zope/interface/tests/test_interface.py b/src/zope/interface/tests/test_interface.py
index 096bdcf4..236d4817 100644
--- a/src/zope/interface/tests/test_interface.py
+++ b/src/zope/interface/tests/test_interface.py
@@ -23,9 +23,10 @@
 # pylint:disable=no-value-for-parameter
 import unittest
 
+from zope.interface.tests import CleanUp
 from zope.interface.tests import MissingSomeAttrs
 from zope.interface.tests import OptimizationTestMixin
-from zope.interface.tests import CleanUp
+
 
 _marker = object()
 
@@ -33,8 +34,8 @@
 class Test_invariant(unittest.TestCase):
 
     def test_w_single(self):
-        from zope.interface.interface import invariant
         from zope.interface.interface import TAGGED_DATA
+        from zope.interface.interface import invariant
 
         def _check(*args, **kw):
             raise NotImplementedError()
@@ -46,8 +47,8 @@ class Foo:
                          {'invariants': [_check]})
 
     def test_w_multiple(self):
-        from zope.interface.interface import invariant
         from zope.interface.interface import TAGGED_DATA
+        from zope.interface.interface import invariant
 
         def _check(*args, **kw):
             raise NotImplementedError()
@@ -66,8 +67,8 @@ class Foo:
 class Test_taggedValue(unittest.TestCase):
 
     def test_w_single(self):
-        from zope.interface.interface import taggedValue
         from zope.interface.interface import TAGGED_DATA
+        from zope.interface.interface import taggedValue
 
         class Foo:
             taggedValue('bar', ['baz'])
@@ -76,8 +77,8 @@ class Foo:
                          {'bar': ['baz']})
 
     def test_w_multiple(self):
-        from zope.interface.interface import taggedValue
         from zope.interface.interface import TAGGED_DATA
+        from zope.interface.interface import taggedValue
 
         class Foo:
             taggedValue('bar', ['baz'])
@@ -87,8 +88,8 @@ class Foo:
                          {'bar': ['baz'], 'qux': 'spam'})
 
     def test_w_multiple_overwriting(self):
-        from zope.interface.interface import taggedValue
         from zope.interface.interface import TAGGED_DATA
+        from zope.interface.interface import taggedValue
 
         class Foo:
             taggedValue('bar', ['baz'])
@@ -174,7 +175,7 @@ def test_verifies(self):
 class GenericSpecificationBaseTests(unittest.TestCase):
     # Tests that work with both implementations
     def _getFallbackClass(self):
-        from zope.interface.interface import SpecificationBasePy # pylint:disable=no-name-in-module
+        from zope.interface.interface import SpecificationBasePy
         return SpecificationBasePy
 
     _getTargetClass = _getFallbackClass
@@ -566,9 +567,9 @@ def test_multiple_inheritance_no_interfaces(self):
         # early in the resolution order. It stays at the end,
         # like it should.
         # See https://github.com/zopefoundation/zope.interface/issues/8
-        from zope.interface.interface import Interface
-        from zope.interface.declarations import implementer
         from zope.interface.declarations import implementedBy
+        from zope.interface.declarations import implementer
+        from zope.interface.interface import Interface
 
         class IDefaultViewName(Interface):
             pass
@@ -1149,8 +1150,8 @@ def test__module__is_readonly(self):
 class InterfaceTests(unittest.TestCase):
 
     def test_attributes_link_to_interface(self):
-        from zope.interface import Interface
         from zope.interface import Attribute
+        from zope.interface import Interface
 
         class I1(Interface):
             attr = Attribute("My attr")
@@ -1433,8 +1434,8 @@ def method2():
 
     def test_namesAndDescriptions_simple(self):
         from zope.interface import Attribute
-        from zope.interface.interface import Method
         from zope.interface import Interface
+        from zope.interface.interface import Method
 
 
         class ISimple(Interface):
@@ -1522,8 +1523,8 @@ class IEmpty(Interface):
 
     def test_getDescriptionFor_simple(self):
         from zope.interface import Attribute
-        from zope.interface.interface import Method
         from zope.interface import Interface
+        from zope.interface.interface import Method
 
 
         class ISimple(Interface):
@@ -1544,8 +1545,8 @@ def method():
 
     def test_getDescriptionFor_derived(self):
         from zope.interface import Attribute
-        from zope.interface.interface import Method
         from zope.interface import Interface
+        from zope.interface.interface import Method
 
 
         class IBase(Interface):
@@ -1593,8 +1594,8 @@ class IEmpty(Interface):
 
     def test___getitem__simple(self):
         from zope.interface import Attribute
-        from zope.interface.interface import Method
         from zope.interface import Interface
+        from zope.interface.interface import Method
 
 
         class ISimple(Interface):
@@ -1615,8 +1616,8 @@ def method():
 
     def test___getitem___derived(self):
         from zope.interface import Attribute
-        from zope.interface.interface import Method
         from zope.interface import Interface
+        from zope.interface.interface import Method
 
 
         class IBase(Interface):
@@ -1923,8 +1924,8 @@ class HasInvariant:
         IInvariant.setTaggedValue('invariants', old_invariants)
 
     def test___doc___element(self):
-        from zope.interface import Interface
         from zope.interface import Attribute
+        from zope.interface import Interface
         class IDocstring(Interface):
             "xxx"
 
@@ -1940,8 +1941,8 @@ class IDocstringAndAttribute(Interface):
         self.assertEqual(list(IDocstringAndAttribute), ['__doc__'])
 
     def test_invariant_as_decorator(self):
-        from zope.interface import Interface
         from zope.interface import Attribute
+        from zope.interface import Interface
         from zope.interface import implementer
         from zope.interface import invariant
         from zope.interface.exceptions import Invalid
@@ -1994,8 +1995,8 @@ class IDerived2(IDerived):
         self.assertEqual(set(IDerived2.getTaggedValueTags()), {'qux', 'foo'})
 
     def _make_taggedValue_tree(self, base):
-        from zope.interface import taggedValue
         from zope.interface import Attribute
+        from zope.interface import taggedValue
         O = base
         class F(O):
             taggedValue('tag', 'F')
@@ -2063,8 +2064,8 @@ def test_description_cache_management(self):
         # See https://bugs.launchpad.net/zope.interface/+bug/185974
         # There was a bug where the cache used by Specification.get() was not
         # cleared when the bases were changed.
-        from zope.interface import Interface
         from zope.interface import Attribute
+        from zope.interface import Interface
 
         class I1(Interface):
             a = Attribute('a')
@@ -2159,8 +2160,8 @@ class C:
 
     def test___call___w_overridden_adapt(self):
         from zope.interface import Interface
-        from zope.interface import interfacemethod
         from zope.interface import implementer
+        from zope.interface import interfacemethod
 
         class I(Interface):
 
@@ -2181,8 +2182,8 @@ def test___call___w_overridden_adapt_and_conform(self):
         # Conform is first, taking precedence over __adapt__,
         # *if* it returns non-None
         from zope.interface import Interface
-        from zope.interface import interfacemethod
         from zope.interface import implementer
+        from zope.interface import interfacemethod
 
         class IAdapt(Interface):
             @interfacemethod
@@ -2215,9 +2216,10 @@ def __conform__(self, iface):
 
     def test___call___w_overridden_adapt_call_super(self):
         import sys
+
         from zope.interface import Interface
-        from zope.interface import interfacemethod
         from zope.interface import implementer
+        from zope.interface import interfacemethod
 
         class I(Interface):
 
@@ -2641,8 +2643,10 @@ class TestTypeAnnotations(unittest.TestCase):
     """Test using Interfaces in type annotations."""
 
     def test___or__(self):
+        from typing import Optional
+        from typing import Union
+
         from zope.interface import Interface
-        from typing import Optional, Union
         class I1(Interface):
             pass
         class I2(Interface):
@@ -2656,8 +2660,10 @@ class B:
             B.__annotations__, {'a': Optional[I1], 'b': Union[I1, I2]})
 
     def test___ror__(self):
+        from typing import Optional
+        from typing import Union
+
         from zope.interface import Interface
-        from typing import Optional, Union
         class I1(Interface):
             pass
 
diff --git a/src/zope/interface/tests/test_interfaces.py b/src/zope/interface/tests/test_interfaces.py
index 11ba0c04..cc1273a2 100644
--- a/src/zope/interface/tests/test_interfaces.py
+++ b/src/zope/interface/tests/test_interfaces.py
@@ -122,7 +122,7 @@ def test_instance_consistent__iro__(self):
         self.assertTrue(ro.is_consistent(self._getTargetInterface()))
 
     def test_class_consistent__iro__(self):
-        from zope.interface import ro
         from zope.interface import implementedBy
+        from zope.interface import ro
 
         self.assertTrue(ro.is_consistent(implementedBy(self._getTargetClass())))
diff --git a/src/zope/interface/tests/test_odd_declarations.py b/src/zope/interface/tests/test_odd_declarations.py
index 55089157..b92015f5 100644
--- a/src/zope/interface/tests/test_odd_declarations.py
+++ b/src/zope/interface/tests/test_odd_declarations.py
@@ -18,15 +18,16 @@
 """
 import unittest
 
-from zope.interface.tests import odd
 from zope.interface import Interface
-from zope.interface import implementer
-from zope.interface import directlyProvides
-from zope.interface import providedBy
-from zope.interface import directlyProvidedBy
 from zope.interface import classImplements
 from zope.interface import classImplementsOnly
+from zope.interface import directlyProvidedBy
+from zope.interface import directlyProvides
 from zope.interface import implementedBy
+from zope.interface import implementer
+from zope.interface import providedBy
+from zope.interface.tests import odd
+
 
 class I1(Interface): pass
 class I2(Interface): pass
diff --git a/src/zope/interface/tests/test_registry.py b/src/zope/interface/tests/test_registry.py
index eaaabb28..abdd9511 100644
--- a/src/zope/interface/tests/test_registry.py
+++ b/src/zope/interface/tests/test_registry.py
@@ -17,9 +17,9 @@
 
 from zope.interface import Interface
 from zope.interface.adapter import VerifyingAdapterRegistry
-
 from zope.interface.registry import Components
 
+
 class ComponentsTests(unittest.TestCase):
 
     def _getTargetClass(self):
@@ -76,7 +76,8 @@ def test_assign_to___bases__(self):
                          (base1.utilities, base2.utilities))
 
     def test_registerUtility_with_component_name(self):
-        from zope.interface.declarations import named, InterfaceClass
+        from zope.interface.declarations import InterfaceClass
+        from zope.interface.declarations import named
 
 
         class IFoo(InterfaceClass):
@@ -177,8 +178,8 @@ class Foo:
                           comp.registerUtility, _to_reg, None, _name, _info)
 
     def test_registerUtility_wo_provided(self):
-        from zope.interface.declarations import directlyProvides
         from zope.interface.declarations import InterfaceClass
+        from zope.interface.declarations import directlyProvides
         from zope.interface.interfaces import Registered
         from zope.interface.registry import UtilityRegistration
 
@@ -271,8 +272,8 @@ class IFoo(InterfaceClass):
 
     def test_registerUtility_replaces_existing_reg(self):
         from zope.interface.declarations import InterfaceClass
-        from zope.interface.interfaces import Unregistered
         from zope.interface.interfaces import Registered
+        from zope.interface.interfaces import Unregistered
         from zope.interface.registry import UtilityRegistration
 
         class IFoo(InterfaceClass):
@@ -486,8 +487,8 @@ def _factory():
         self.assertTrue(event.object.factory is _factory)
 
     def test_unregisterUtility_wo_explicit_provided(self):
-        from zope.interface.declarations import directlyProvides
         from zope.interface.declarations import InterfaceClass
+        from zope.interface.declarations import directlyProvides
         from zope.interface.interfaces import Unregistered
         from zope.interface.registry import UtilityRegistration
 
@@ -520,8 +521,8 @@ class Foo:
         self.assertTrue(event.object.factory is None)
 
     def test_unregisterUtility_wo_component_or_factory(self):
-        from zope.interface.declarations import directlyProvides
         from zope.interface.declarations import InterfaceClass
+        from zope.interface.declarations import directlyProvides
         from zope.interface.interfaces import Unregistered
         from zope.interface.registry import UtilityRegistration
 
@@ -687,7 +688,6 @@ def test_registeredUtilities_empty(self):
 
     def test_registeredUtilities_notempty(self):
         from zope.interface.declarations import InterfaceClass
-
         from zope.interface.registry import UtilityRegistration
         class IFoo(InterfaceClass):
             pass
@@ -809,7 +809,8 @@ class IFoo(InterfaceClass):
                          [_to_reg])
 
     def test_registerAdapter_with_component_name(self):
-        from zope.interface.declarations import named, InterfaceClass
+        from zope.interface.declarations import InterfaceClass
+        from zope.interface.declarations import named
 
 
         class IFoo(InterfaceClass):
@@ -988,8 +989,8 @@ class _Factory:
 
     def test_registerAdapter_w_required_containing_class(self):
         from zope.interface.declarations import InterfaceClass
-        from zope.interface.declarations import implementer
         from zope.interface.declarations import implementedBy
+        from zope.interface.declarations import implementer
         from zope.interface.interfaces import Registered
         from zope.interface.registry import AdapterRegistration
 
@@ -1227,7 +1228,6 @@ def test_registeredAdapters_empty(self):
 
     def test_registeredAdapters_notempty(self):
         from zope.interface.declarations import InterfaceClass
-
         from zope.interface.registry import AdapterRegistration
         class IFoo(InterfaceClass):
             pass
@@ -1834,7 +1834,6 @@ def test_registeredSubscriptionAdapters_empty(self):
 
     def test_registeredSubscriptionAdapters_notempty(self):
         from zope.interface.declarations import InterfaceClass
-
         from zope.interface.registry import SubscriptionRegistration
         class IFoo(InterfaceClass):
             pass
@@ -2477,13 +2476,13 @@ def __repr__(self):
                )
 
     def test_class_conforms_to_IUtilityRegistration(self):
-        from zope.interface.verify import verifyClass
         from zope.interface.interfaces import IUtilityRegistration
+        from zope.interface.verify import verifyClass
         verifyClass(IUtilityRegistration, self._getTargetClass())
 
     def test_instance_conforms_to_IUtilityRegistration(self):
-        from zope.interface.verify import verifyObject
         from zope.interface.interfaces import IUtilityRegistration
+        from zope.interface.verify import verifyObject
         ur, _, _ =  self._makeOne()
         verifyObject(IUtilityRegistration, ur)
 
@@ -2663,13 +2662,13 @@ def __repr__(self):
                )
 
     def test_class_conforms_to_IAdapterRegistration(self):
-        from zope.interface.verify import verifyClass
         from zope.interface.interfaces import IAdapterRegistration
+        from zope.interface.verify import verifyClass
         verifyClass(IAdapterRegistration, self._getTargetClass())
 
     def test_instance_conforms_to_IAdapterRegistration(self):
-        from zope.interface.verify import verifyObject
         from zope.interface.interfaces import IAdapterRegistration
+        from zope.interface.verify import verifyObject
         ar, _, _ =  self._makeOne()
         verifyObject(IAdapterRegistration, ar)
 
@@ -2872,13 +2871,13 @@ def __repr__(self): # pragma: no cover
                )
 
     def test_class_conforms_to_ISubscriptionAdapterRegistration(self):
-        from zope.interface.verify import verifyClass
         from zope.interface.interfaces import ISubscriptionAdapterRegistration
+        from zope.interface.verify import verifyClass
         verifyClass(ISubscriptionAdapterRegistration, self._getTargetClass())
 
     def test_instance_conforms_to_ISubscriptionAdapterRegistration(self):
-        from zope.interface.verify import verifyObject
         from zope.interface.interfaces import ISubscriptionAdapterRegistration
+        from zope.interface.verify import verifyObject
         sar, _, _ =  self._makeOne()
         verifyObject(ISubscriptionAdapterRegistration, sar)
 
@@ -2908,13 +2907,13 @@ def __repr__(self):
                )
 
     def test_class_conforms_to_IHandlerRegistration(self):
-        from zope.interface.verify import verifyClass
         from zope.interface.interfaces import IHandlerRegistration
+        from zope.interface.verify import verifyClass
         verifyClass(IHandlerRegistration, self._getTargetClass())
 
     def test_instance_conforms_to_IHandlerRegistration(self):
-        from zope.interface.verify import verifyObject
         from zope.interface.interfaces import IHandlerRegistration
+        from zope.interface.verify import verifyObject
         hr, _, _ =  self._makeOne()
         verifyObject(IHandlerRegistration, hr)
 
diff --git a/src/zope/interface/tests/test_ro.py b/src/zope/interface/tests/test_ro.py
index 6f7a6440..49c46259 100644
--- a/src/zope/interface/tests/test_ro.py
+++ b/src/zope/interface/tests/test_ro.py
@@ -14,6 +14,7 @@
 """Resolution ordering utility tests"""
 import unittest
 
+
 # pylint:disable=blacklisted-name,protected-access,attribute-defined-outside-init
 
 class Test__mergeOrderings(unittest.TestCase):
@@ -144,10 +145,10 @@ def test_mixed_inheritance_and_implementation(self):
         # https://github.com/zopefoundation/zope.interface/issues/8
         # This test should fail, but doesn't, as described in that issue.
         # pylint:disable=inherit-non-class
-        from zope.interface import implementer
         from zope.interface import Interface
-        from zope.interface import providedBy
         from zope.interface import implementedBy
+        from zope.interface import implementer
+        from zope.interface import providedBy
 
         class IFoo(Interface):
             pass
@@ -276,6 +277,7 @@ def _check_handler_complex_diamond(self):
     def test_ExtendedPathIndex_implement_thing_implementedby_super(self):
         # See https://github.com/zopefoundation/zope.interface/pull/182#issuecomment-598754056
         from zope.interface import ro
+
         # pylint:disable=inherit-non-class
         class _Based:
             __bases__ = ()
@@ -337,8 +339,8 @@ class IPathIndex(Interface):
             self._callFUT(ExtendedPathIndex, strict=True)
 
     def test_OSError_IOError(self):
-        from zope.interface.common import interfaces
         from zope.interface import providedBy
+        from zope.interface.common import interfaces
 
         self.assertEqual(
             list(providedBy(OSError()).flattened()),
@@ -353,6 +355,7 @@ def test_OSError_IOError(self):
 
     def test_non_orderable(self):
         import warnings
+
         from zope.interface import ro
         try:
             # If we've already warned, we must reset that state.
diff --git a/src/zope/interface/tests/test_sorting.py b/src/zope/interface/tests/test_sorting.py
index 0e33f47f..8c0df4c3 100644
--- a/src/zope/interface/tests/test_sorting.py
+++ b/src/zope/interface/tests/test_sorting.py
@@ -18,6 +18,7 @@
 
 from zope.interface import Interface
 
+
 class I1(Interface): pass
 class I2(I1): pass
 class I3(I1): pass
diff --git a/src/zope/interface/tests/test_verify.py b/src/zope/interface/tests/test_verify.py
index 5227a92c..5080d025 100644
--- a/src/zope/interface/tests/test_verify.py
+++ b/src/zope/interface/tests/test_verify.py
@@ -15,6 +15,7 @@
 """
 import unittest
 
+
 # pylint:disable=inherit-non-class,no-method-argument,no-self-argument
 
 class Test_verifyClass(unittest.TestCase):
@@ -486,9 +487,9 @@ class Current:
         self._callFUT(ICurrent, Current)
 
     def test_w_callable_non_func_method(self):
-        from zope.interface.interface import Method
         from zope.interface import Interface
         from zope.interface import implementer
+        from zope.interface.interface import Method
 
         class QuasiMethod(Method):
             def __call__(self, *args, **kw):
@@ -552,11 +553,11 @@ def test_tuple_IReadSequence(self):
 
 
     def test_multiple_invalid(self):
-        from zope.interface.exceptions import MultipleInvalid
-        from zope.interface.exceptions import DoesNotImplement
-        from zope.interface.exceptions import BrokenImplementation
         from zope.interface import Interface
         from zope.interface import classImplements
+        from zope.interface.exceptions import BrokenImplementation
+        from zope.interface.exceptions import DoesNotImplement
+        from zope.interface.exceptions import MultipleInvalid
 
         class ISeveralMethods(Interface):
             def meth1(arg1):
@@ -614,15 +615,15 @@ class Current:
                           self._callFUT, ICurrent, Current)
 
     def test_module_hit(self):
-        from zope.interface.tests.idummy import IDummyModule
         from zope.interface.tests import dummy
+        from zope.interface.tests.idummy import IDummyModule
 
         self._callFUT(IDummyModule, dummy)
 
     def test_module_miss(self):
         from zope.interface import Interface
-        from zope.interface.tests import dummy
         from zope.interface.exceptions import DoesNotImplement
+        from zope.interface.tests import dummy
 
         # same name, different object
         class IDummyModule(Interface):
diff --git a/src/zope/interface/verify.py b/src/zope/interface/verify.py
index 0ab0b3f9..0894d2d2 100644
--- a/src/zope/interface/verify.py
+++ b/src/zope/interface/verify.py
@@ -23,8 +23,10 @@
 from zope.interface.exceptions import DoesNotImplement
 from zope.interface.exceptions import Invalid
 from zope.interface.exceptions import MultipleInvalid
+from zope.interface.interface import Method
+from zope.interface.interface import fromFunction
+from zope.interface.interface import fromMethod
 
-from zope.interface.interface import fromMethod, fromFunction, Method
 
 __all__ = [
     'verifyObject',