diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
index ac885a8e9ac..35c8d742c1a 100644
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -201,8 +201,8 @@ class BaseEventLoop(events.AbstractEventLoop):
         """Create socket transport."""
         raise NotImplementedError
 
-    def _make_ssl_transport(self, rawsock, protocol, sslcontext, waiter=None, *,
-                            server_side=False, server_hostname=None,
+    def _make_ssl_transport(self, rawsock, protocol, sslcontext, waiter=None,
+                            *, server_side=False, server_hostname=None,
                             extra=None, server=None):
         """Create SSL transport."""
         raise NotImplementedError
diff --git a/Lib/asyncio/coroutines.py b/Lib/asyncio/coroutines.py
index c28de95a46b..a1b28751f70 100644
--- a/Lib/asyncio/coroutines.py
+++ b/Lib/asyncio/coroutines.py
@@ -182,14 +182,18 @@ def _format_coroutine(coro):
     and not inspect.isgeneratorfunction(coro.func)):
         filename, lineno = events._get_function_source(coro.func)
         if coro.gi_frame is None:
-            coro_repr = '%s() done, defined at %s:%s' % (coro_name, filename, lineno)
+            coro_repr = ('%s() done, defined at %s:%s'
+                         % (coro_name, filename, lineno))
         else:
-            coro_repr = '%s() running, defined at %s:%s' % (coro_name, filename, lineno)
+            coro_repr = ('%s() running, defined at %s:%s'
+                         % (coro_name, filename, lineno))
     elif coro.gi_frame is not None:
         lineno = coro.gi_frame.f_lineno
-        coro_repr = '%s() running at %s:%s' % (coro_name, filename, lineno)
+        coro_repr = ('%s() running at %s:%s'
+                     % (coro_name, filename, lineno))
     else:
         lineno = coro.gi_code.co_firstlineno
-        coro_repr = '%s() done, defined at %s:%s' % (coro_name, filename, lineno)
+        coro_repr = ('%s() done, defined at %s:%s'
+                     % (coro_name, filename, lineno))
 
     return coro_repr
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index 2e7364b8c80..69b649ceeae 100644
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -55,8 +55,8 @@ class BaseSelectorEventLoop(base_events.BaseEventLoop):
         return _SelectorSocketTransport(self, sock, protocol, waiter,
                                         extra, server)
 
-    def _make_ssl_transport(self, rawsock, protocol, sslcontext, waiter=None, *,
-                            server_side=False, server_hostname=None,
+    def _make_ssl_transport(self, rawsock, protocol, sslcontext, waiter=None,
+                            *, server_side=False, server_hostname=None,
                             extra=None, server=None):
         return _SelectorSslTransport(
             self, rawsock, protocol, sslcontext, waiter,
@@ -484,7 +484,8 @@ class _SelectorTransport(transports._FlowControlMixin,
                 info.append('read=idle')
 
             polling = _test_selector_event(self._loop._selector,
-                                           self._sock_fd, selectors.EVENT_WRITE)
+                                           self._sock_fd,
+                                           selectors.EVENT_WRITE)
             if polling:
                 state = 'polling'
             else:
diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 9aebffdaba3..8fc5beacf97 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -68,7 +68,7 @@ class Task(futures.Future):
         return {t for t in cls._all_tasks if t._loop is loop}
 
     def __init__(self, coro, *, loop=None):
-        assert coroutines.iscoroutine(coro), repr(coro)  # Not a coroutine function!
+        assert coroutines.iscoroutine(coro), repr(coro)
         super().__init__(loop=loop)
         if self._source_traceback:
             del self._source_traceback[-1]
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
index d1461fd0248..91e43cfc97c 100644
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -69,7 +69,8 @@ class _UnixSelectorEventLoop(selector_events.BaseSelectorEventLoop):
         """
         if (coroutines.iscoroutine(callback)
         or coroutines.iscoroutinefunction(callback)):
-            raise TypeError("coroutines cannot be used with add_signal_handler()")
+            raise TypeError("coroutines cannot be used "
+                            "with add_signal_handler()")
         self._check_signal(sig)
         self._check_closed()
         try:
diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py
index d7feb1aec83..9d496f2f47a 100644
--- a/Lib/asyncio/windows_events.py
+++ b/Lib/asyncio/windows_events.py
@@ -424,7 +424,8 @@ class IocpProactor:
             else:
                 return windows_utils.PipeHandle(handle)
 
-        return self._register(ov, None, finish_connect_pipe, wait_for_post=True)
+        return self._register(ov, None, finish_connect_pipe,
+                              wait_for_post=True)
 
     def wait_for_handle(self, handle, timeout=None):
         """Wait for a handle.
diff --git a/Lib/asyncio/windows_utils.py b/Lib/asyncio/windows_utils.py
index c6e4bc9e46b..b47581235cb 100644
--- a/Lib/asyncio/windows_utils.py
+++ b/Lib/asyncio/windows_utils.py
@@ -36,15 +36,16 @@ else:
     def socketpair(family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0):
         """A socket pair usable as a self-pipe, for Windows.
 
-        Origin: https://gist.github.com/4325783, by Geert Jansen.  Public domain.
+        Origin: https://gist.github.com/4325783, by Geert Jansen.
+        Public domain.
         """
         if family == socket.AF_INET:
             host = '127.0.0.1'
         elif family == socket.AF_INET6:
             host = '::1'
         else:
-            raise ValueError("Only AF_INET and AF_INET6 socket address families "
-                             "are supported")
+            raise ValueError("Only AF_INET and AF_INET6 socket address "
+                             "families are supported")
         if type != socket.SOCK_STREAM:
             raise ValueError("Only SOCK_STREAM socket type is supported")
         if proto != 0:
diff --git a/Lib/test/test_asyncio/test_base_events.py b/Lib/test/test_asyncio/test_base_events.py
index 6599e4eabdb..6bf7e79607e 100644
--- a/Lib/test/test_asyncio/test_base_events.py
+++ b/Lib/test/test_asyncio/test_base_events.py
@@ -285,7 +285,8 @@ class BaseEventLoopTests(test_utils.TestCase):
     @mock.patch('asyncio.base_events.logger')
     def test__run_once_logging(self, m_logger):
         def slow_select(timeout):
-            # Sleep a bit longer than a second to avoid timer resolution issues.
+            # Sleep a bit longer than a second to avoid timer resolution
+            # issues.
             time.sleep(1.1)
             return []
 
@@ -1217,14 +1218,16 @@ class BaseEventLoopWithSelectorTests(test_utils.TestCase):
         self.loop.run_forever()
         fmt, *args = m_logger.warning.call_args[0]
         self.assertRegex(fmt % tuple(args),
-                         "^Executing <Handle.*stop_loop_cb.*> took .* seconds$")
+                         "^Executing <Handle.*stop_loop_cb.*> "
+                         "took .* seconds$")
 
         # slow task
         asyncio.async(stop_loop_coro(self.loop), loop=self.loop)
         self.loop.run_forever()
         fmt, *args = m_logger.warning.call_args[0]
         self.assertRegex(fmt % tuple(args),
-                         "^Executing <Task.*stop_loop_coro.*> took .* seconds$")
+                         "^Executing <Task.*stop_loop_coro.*> "
+                         "took .* seconds$")
 
 
 if __name__ == '__main__':
diff --git a/Lib/test/test_asyncio/test_futures.py b/Lib/test/test_asyncio/test_futures.py
index 286370914d9..dac1e897afe 100644
--- a/Lib/test/test_asyncio/test_futures.py
+++ b/Lib/test/test_asyncio/test_futures.py
@@ -133,7 +133,8 @@ class FutureTests(test_utils.TestCase):
         exc = RuntimeError()
         f_exception = asyncio.Future(loop=self.loop)
         f_exception.set_exception(exc)
-        self.assertEqual(repr(f_exception), '<Future finished exception=RuntimeError()>')
+        self.assertEqual(repr(f_exception),
+                         '<Future finished exception=RuntimeError()>')
         self.assertIs(f_exception.exception(), exc)
 
         def func_repr(func):
@@ -332,16 +333,21 @@ class FutureTests(test_utils.TestCase):
             if debug:
                 frame = source_traceback[-1]
                 regex = (r'^Future exception was never retrieved\n'
-                         r'future: <Future finished exception=MemoryError\(\) created at {filename}:{lineno}>\n'
-                         r'source_traceback: Object created at \(most recent call last\):\n'
+                         r'future: <Future finished exception=MemoryError\(\) '
+                             r'created at {filename}:{lineno}>\n'
+                         r'source_traceback: Object '
+                            r'created at \(most recent call last\):\n'
                          r'  File'
                          r'.*\n'
-                         r'  File "{filename}", line {lineno}, in check_future_exception_never_retrieved\n'
+                         r'  File "{filename}", line {lineno}, '
+                            r'in check_future_exception_never_retrieved\n'
                          r'    future = asyncio\.Future\(loop=self\.loop\)$'
-                         ).format(filename=re.escape(frame[0]), lineno=frame[1])
+                         ).format(filename=re.escape(frame[0]),
+                                  lineno=frame[1])
             else:
                 regex = (r'^Future exception was never retrieved\n'
-                         r'future: <Future finished exception=MemoryError\(\)>$'
+                         r'future: '
+                            r'<Future finished exception=MemoryError\(\)>$'
                          )
             exc_info = (type(exc), exc, exc.__traceback__)
             m_log.error.assert_called_once_with(mock.ANY, exc_info=exc_info)
@@ -352,12 +358,14 @@ class FutureTests(test_utils.TestCase):
                          r'Future/Task created at \(most recent call last\):\n'
                          r'  File'
                          r'.*\n'
-                         r'  File "{filename}", line {lineno}, in check_future_exception_never_retrieved\n'
+                         r'  File "{filename}", line {lineno}, '
+                            r'in check_future_exception_never_retrieved\n'
                          r'    future = asyncio\.Future\(loop=self\.loop\)\n'
                          r'Traceback \(most recent call last\):\n'
                          r'.*\n'
                          r'MemoryError$'
-                         ).format(filename=re.escape(frame[0]), lineno=frame[1])
+                         ).format(filename=re.escape(frame[0]),
+                                  lineno=frame[1])
             else:
                 regex = (r'^Future/Task exception was never retrieved\n'
                          r'Traceback \(most recent call last\):\n'
diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
index 73a375aba42..05963cf1478 100644
--- a/Lib/test/test_asyncio/test_streams.py
+++ b/Lib/test/test_asyncio/test_streams.py
@@ -613,8 +613,10 @@ os.close(fd)
         watcher.attach_loop(self.loop)
         try:
             asyncio.set_child_watcher(watcher)
-            proc = self.loop.run_until_complete(
-                asyncio.create_subprocess_exec(*args, pass_fds={wfd}, loop=self.loop))
+            create = asyncio.create_subprocess_exec(*args,
+                                                    pass_fds={wfd},
+                                                    loop=self.loop)
+            proc = self.loop.run_until_complete(create)
             self.loop.run_until_complete(proc.wait())
         finally:
             asyncio.set_child_watcher(None)
diff --git a/Lib/test/test_asyncio/test_subprocess.py b/Lib/test/test_asyncio/test_subprocess.py
index 1fe9095d165..5fc1dc0a034 100644
--- a/Lib/test/test_asyncio/test_subprocess.py
+++ b/Lib/test/test_asyncio/test_subprocess.py
@@ -115,7 +115,9 @@ class SubprocessMixin:
     def test_send_signal(self):
         code = 'import time; print("sleeping", flush=True); time.sleep(3600)'
         args = [sys.executable, '-c', code]
-        create = asyncio.create_subprocess_exec(*args, loop=self.loop, stdout=subprocess.PIPE)
+        create = asyncio.create_subprocess_exec(*args,
+                                                stdout=subprocess.PIPE,
+                                                loop=self.loop)
         proc = self.loop.run_until_complete(create)
 
         @asyncio.coroutine
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 1520fb4cc75..7807dc04719 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -208,7 +208,8 @@ class TaskTests(test_utils.TestCase):
         self.assertEqual(notmuch.__name__, 'notmuch')
         if PY35:
             self.assertEqual(notmuch.__qualname__,
-                             'TaskTests.test_task_repr_coro_decorator.<locals>.notmuch')
+                             'TaskTests.test_task_repr_coro_decorator'
+                             '.<locals>.notmuch')
         self.assertEqual(notmuch.__module__, __name__)
 
         # test coroutine object
@@ -218,7 +219,8 @@ class TaskTests(test_utils.TestCase):
             # function, as expected, and have a qualified name (__qualname__
             # attribute).
             coro_name = 'notmuch'
-            coro_qualname = 'TaskTests.test_task_repr_coro_decorator.<locals>.notmuch'
+            coro_qualname = ('TaskTests.test_task_repr_coro_decorator'
+                             '.<locals>.notmuch')
         else:
             # On Python < 3.5, generators inherit the name of the code, not of
             # the function. See: http://bugs.python.org/issue21205
@@ -239,7 +241,8 @@ class TaskTests(test_utils.TestCase):
             else:
                 code = gen.gi_code
                 coro = ('%s() running at %s:%s'
-                        % (coro_qualname, code.co_filename, code.co_firstlineno))
+                        % (coro_qualname, code.co_filename,
+                           code.co_firstlineno))
 
             self.assertEqual(repr(gen), '<CoroWrapper %s>' % coro)
 
@@ -1678,7 +1681,8 @@ class TaskTests(test_utils.TestCase):
         self.assertTrue(m_log.error.called)
         message = m_log.error.call_args[0][0]
         func_filename, func_lineno = test_utils.get_function_source(coro_noop)
-        regex = (r'^<CoroWrapper %s\(\) .* at %s:%s, .*> was never yielded from\n'
+        regex = (r'^<CoroWrapper %s\(\) .* at %s:%s, .*> '
+                    r'was never yielded from\n'
                  r'Coroutine object created at \(most recent call last\):\n'
                  r'.*\n'
                  r'  File "%s", line %s, in test_coroutine_never_yielded\n'