diff --git a/lib/ansible/executor/task_executor.py b/lib/ansible/executor/task_executor.py
index c4a92136574..e883a64ddf0 100644
--- a/lib/ansible/executor/task_executor.py
+++ b/lib/ansible/executor/task_executor.py
@@ -537,7 +537,7 @@ class TaskExecutor:
             if self._task.register:
                 vars_copy[self._task.register] = wrap_var(result.copy())
 
-            if self._task.async > 0:
+            if self._task.async_val > 0:
                 if self._task.poll > 0 and not result.get('skipped') and not result.get('failed'):
                     result = self._poll_async_result(result=result, templar=templar, task_vars=vars_copy)
                     # FIXME callback 'v2_runner_on_async_poll' here
@@ -668,7 +668,7 @@ class TaskExecutor:
             shared_loader_obj=self._shared_loader_obj,
         )
 
-        time_left = self._task.async
+        time_left = self._task.async_val
         while time_left > 0:
             time.sleep(self._task.poll)
 
diff --git a/lib/ansible/playbook/attribute.py b/lib/ansible/playbook/attribute.py
index 5eab1753ffe..455f7ded19b 100644
--- a/lib/ansible/playbook/attribute.py
+++ b/lib/ansible/playbook/attribute.py
@@ -25,7 +25,7 @@ from copy import deepcopy
 class Attribute:
 
     def __init__(self, isa=None, private=False, default=None, required=False, listof=None, priority=0, class_type=None, always_post_validate=False,
-                 inherit=True):
+                 inherit=True, alias=None):
         """
         :class:`Attribute` specifies constraints for attributes of objects which
         derive from playbook data.  The attributes of the object are basically
@@ -53,6 +53,8 @@ class Attribute:
         :kwarg inherit: A boolean value, which controls whether the object
             containing this field should attempt to inherit the value from its
             parent object if the local value is None.
+        :kwarg alias: An alias to use for the attribute name, for situations where
+            the attribute name may conflict with a Python reserved word.
         """
 
         self.isa = isa
@@ -64,6 +66,7 @@ class Attribute:
         self.class_type = class_type
         self.always_post_validate = always_post_validate
         self.inherit = inherit
+        self.alias = alias
 
         if default is not None and self.isa in ('list', 'dict', 'set'):
             self.default = deepcopy(default)
diff --git a/lib/ansible/playbook/base.py b/lib/ansible/playbook/base.py
index 4a27eaea6dd..4beb56f55cb 100644
--- a/lib/ansible/playbook/base.py
+++ b/lib/ansible/playbook/base.py
@@ -109,6 +109,11 @@ class BaseMeta(type):
                     dst_dict['_valid_attrs'][attr_name] = value
                     dst_dict['_attributes'][attr_name] = value.default
 
+                    if value.alias is not None:
+                        dst_dict[value.alias] = property(getter, setter, deleter)
+                        dst_dict['_valid_attrs'][value.alias] = value
+                        dst_dict['_alias_attrs'][value.alias] = attr_name
+
         def _process_parents(parents, dst_dict):
             '''
             Helper method which creates attributes from all parent objects
@@ -124,6 +129,7 @@ class BaseMeta(type):
         # create some additional class attributes
         dct['_attributes'] = dict()
         dct['_valid_attrs'] = dict()
+        dct['_alias_attrs'] = dict()
 
         # now create the attributes based on the FieldAttributes
         # available, including from parent (and grandparent) objects
@@ -235,12 +241,15 @@ class Base(with_metaclass(BaseMeta, object)):
         # so that certain fields can be loaded before others, if they are dependent.
         for name, attr in sorted(iteritems(self._valid_attrs), key=operator.itemgetter(1)):
             # copy the value over unless a _load_field method is defined
+            target_name = name
+            if name in self._alias_attrs:
+                target_name = self._alias_attrs[name]
             if name in ds:
                 method = getattr(self, '_load_%s' % name, None)
                 if method:
-                    self._attributes[name] = method(name, ds[name])
+                    self._attributes[target_name] = method(name, ds[name])
                 else:
-                    self._attributes[name] = ds[name]
+                    self._attributes[target_name] = ds[name]
 
         # run early, non-critical validation
         self.validate()
@@ -279,13 +288,16 @@ class Base(with_metaclass(BaseMeta, object)):
             # walk all fields in the object
             for (name, attribute) in iteritems(self._valid_attrs):
 
+                if name in self._alias_attrs:
+                    name = self._alias_attrs[name]
+
                 # run validator only if present
                 method = getattr(self, '_validate_%s' % name, None)
                 if method:
                     method(attribute, name, getattr(self, name))
                 else:
                     # and make sure the attribute is of the type it should be
-                    value = getattr(self, name)
+                    value = self._attributes[name]
                     if value is not None:
                         if attribute.isa == 'string' and isinstance(value, (list, dict)):
                             raise AnsibleParserError(
@@ -314,6 +326,8 @@ class Base(with_metaclass(BaseMeta, object)):
         new_me = self.__class__()
 
         for name in self._valid_attrs.keys():
+            if name in self._alias_attrs:
+                continue
             new_me._attributes[name] = shallowcopy(self._attributes[name])
 
         new_me._loader = self._loader
diff --git a/lib/ansible/playbook/task.py b/lib/ansible/playbook/task.py
index 5e55cf7a1eb..cbedc2b4fea 100644
--- a/lib/ansible/playbook/task.py
+++ b/lib/ansible/playbook/task.py
@@ -69,7 +69,7 @@ class Task(Base, Conditional, Taggable, Become):
     _args = FieldAttribute(isa='dict', default=dict())
     _action = FieldAttribute(isa='string')
 
-    _async = FieldAttribute(isa='int', default=0)
+    _async_val = FieldAttribute(isa='int', default=0, alias='async')
     _changed_when = FieldAttribute(isa='list', default=[])
     _delay = FieldAttribute(isa='int', default=5)
     _delegate_to = FieldAttribute(isa='string')
diff --git a/lib/ansible/plugins/action/__init__.py b/lib/ansible/plugins/action/__init__.py
index e7f9c95fed4..ad6eb0bc255 100644
--- a/lib/ansible/plugins/action/__init__.py
+++ b/lib/ansible/plugins/action/__init__.py
@@ -93,11 +93,11 @@ class ActionBase(with_metaclass(ABCMeta, object)):
 
         result = {}
 
-        if self._task.async and not self._supports_async:
+        if self._task.async_val and not self._supports_async:
             raise AnsibleActionFail('async is not supported for this task.')
         elif self._play_context.check_mode and not self._supports_check_mode:
             raise AnsibleActionSkip('check mode is not supported for this task.')
-        elif self._task.async and self._play_context.check_mode:
+        elif self._task.async_val and self._play_context.check_mode:
             raise AnsibleActionFail('check mode and async cannot be used on same task.')
 
         return result
@@ -159,7 +159,7 @@ class ActionBase(with_metaclass(ABCMeta, object)):
 
         (module_data, module_style, module_shebang) = modify_module(module_name, module_path, module_args,
                                                                     task_vars=task_vars, module_compression=self._play_context.module_compression,
-                                                                    async_timeout=self._task.async, become=self._play_context.become,
+                                                                    async_timeout=self._task.async_val, become=self._play_context.become,
                                                                     become_method=self._play_context.become_method, become_user=self._play_context.become_user,
                                                                     become_password=self._play_context.become_pass,
                                                                     environment=final_environment)
@@ -703,7 +703,7 @@ class ActionBase(with_metaclass(ABCMeta, object)):
             self._transfer_data(remote_async_module_path, async_module_data)
             remote_files.append(remote_async_module_path)
 
-            async_limit = self._task.async
+            async_limit = self._task.async_val
             async_jid = str(random.randint(0, 999999999999))
 
             # call the interpreter for async_wrapper directly
diff --git a/lib/ansible/plugins/action/net_base.py b/lib/ansible/plugins/action/net_base.py
index dc2e8864fde..437e0898a69 100644
--- a/lib/ansible/plugins/action/net_base.py
+++ b/lib/ansible/plugins/action/net_base.py
@@ -114,7 +114,7 @@ class ActionModule(ActionBase):
             display.vvvv('Running implementation module %s' % module)
             result.update(self._execute_module(module_name=module,
                           module_args=new_module_args, task_vars=task_vars,
-                          wrap_async=self._task.async))
+                          wrap_async=self._task.async_val))
 
             display.vvvv('Caching network OS %s in facts' % play_context.network_os)
             result['ansible_facts'] = {'network_os': play_context.network_os}
diff --git a/lib/ansible/plugins/action/normal.py b/lib/ansible/plugins/action/normal.py
index 070942a9f45..f04888c25e1 100644
--- a/lib/ansible/plugins/action/normal.py
+++ b/lib/ansible/plugins/action/normal.py
@@ -39,7 +39,7 @@ class ActionModule(ActionBase):
                 del results['invocation']['module_args']
 
             # FUTURE: better to let _execute_module calculate this internally?
-            wrap_async = self._task.async and not self._connection.has_native_async
+            wrap_async = self._task.async_val and not self._connection.has_native_async
 
             # do work!
             results = merge_hash(results, self._execute_module(tmp=tmp, task_vars=task_vars, wrap_async=wrap_async))
diff --git a/lib/ansible/plugins/action/package.py b/lib/ansible/plugins/action/package.py
index a72880bf5be..f675f3fd8b9 100644
--- a/lib/ansible/plugins/action/package.py
+++ b/lib/ansible/plugins/action/package.py
@@ -66,7 +66,7 @@ class ActionModule(ActionBase):
                     del new_module_args['use']
 
                 display.vvvv("Running %s" % module)
-                result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async))
+                result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async_val))
         else:
             result['failed'] = True
             result['msg'] = 'Could not detect which package manager to use. Try gathering facts or setting the "use" option.'
diff --git a/lib/ansible/plugins/action/service.py b/lib/ansible/plugins/action/service.py
index a7c67fdee68..b3f3f5fd9db 100644
--- a/lib/ansible/plugins/action/service.py
+++ b/lib/ansible/plugins/action/service.py
@@ -74,7 +74,7 @@ class ActionModule(ActionBase):
                         self._display.warning('Ignoring "%s" as it is not used in "%s"' % (unused, module))
 
             self._display.vvvv("Running %s" % module)
-            result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async))
+            result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async_val))
         else:
             result['failed'] = True
             result['msg'] = 'Could not detect which service manager to use. Try gathering facts or setting the "use" option.'
diff --git a/test/compile/python3.7-skip.txt b/test/compile/python3.7-skip.txt
index 4f78158a04d..65a915223cd 100644
--- a/test/compile/python3.7-skip.txt
+++ b/test/compile/python3.7-skip.txt
@@ -1,13 +1,3 @@
 lib/ansible/cli/adhoc.py
-lib/ansible/executor/task_executor.py
 lib/ansible/modules/packaging/os/yum_repository.py
-lib/ansible/plugins/action/__init__.py
-lib/ansible/plugins/action/net_base.py
-lib/ansible/plugins/action/normal.py
-lib/ansible/plugins/action/package.py
-lib/ansible/plugins/action/service.py
-test/units/executor/test_task_executor.py
 test/units/modules/network/nuage/test_nuage_vspk.py
-test/units/plugins/action/test_action.py
-test/units/plugins/action/test_raw.py
-test/units/plugins/action/test_synchronize.py
diff --git a/test/units/executor/test_task_executor.py b/test/units/executor/test_task_executor.py
index fc69f2dbc15..c540390b569 100644
--- a/test/units/executor/test_task_executor.py
+++ b/test/units/executor/test_task_executor.py
@@ -370,11 +370,11 @@ class TestTaskExecutor(unittest.TestCase):
         mock_task.changed_when = None
         mock_task.failed_when = None
         mock_task.post_validate.return_value = None
-        # mock_task.async cannot be left unset, because on Python 3 MagicMock()
+        # mock_task.async_val cannot be left unset, because on Python 3 MagicMock()
         # > 0 raises a TypeError   There are two reasons for using the value 1
         # here: on Python 2 comparing MagicMock() > 0 returns True, and the
         # other reason is that if I specify 0 here, the test fails. ;)
-        mock_task.async = 1
+        mock_task.async_val = 1
         mock_task.poll = 0
 
         mock_play_context = MagicMock()
@@ -431,7 +431,7 @@ class TestTaskExecutor(unittest.TestCase):
         mock_host = MagicMock()
 
         mock_task = MagicMock()
-        mock_task.async = 0.1
+        mock_task.async_val = 0.1
         mock_task.poll = 0.05
 
         mock_play_context = MagicMock()
diff --git a/test/units/plugins/action/test_action.py b/test/units/plugins/action/test_action.py
index 9f460b065b5..0139732b63c 100644
--- a/test/units/plugins/action/test_action.py
+++ b/test/units/plugins/action/test_action.py
@@ -75,12 +75,12 @@ class TestActionBase(unittest.TestCase):
 
         play_context = PlayContext()
 
-        mock_task.async = None
+        mock_task.async_val = None
         action_base = DerivedActionBase(mock_task, mock_connection, play_context, None, None, None)
         results = action_base.run()
         self.assertEqual(results, dict())
 
-        mock_task.async = 0
+        mock_task.async_val = 0
         action_base = DerivedActionBase(mock_task, mock_connection, play_context, None, None, None)
         results = action_base.run()
         self.assertEqual(results, {})
@@ -92,7 +92,7 @@ class TestActionBase(unittest.TestCase):
         # create our fake task
         mock_task = MagicMock()
         mock_task.action = "copy"
-        mock_task.async = 0
+        mock_task.async_val = 0
 
         # create a mock connection, so we don't actually try and connect to things
         mock_connection = MagicMock()
diff --git a/test/units/plugins/action/test_raw.py b/test/units/plugins/action/test_raw.py
index e0a2eb97a5c..f082025d6b1 100644
--- a/test/units/plugins/action/test_raw.py
+++ b/test/units/plugins/action/test_raw.py
@@ -43,7 +43,7 @@ class TestCopyResultExclude(unittest.TestCase):
 
         play_context = Mock()
         task = MagicMock(Task)
-        task.async = False
+        task.async_val = False
         connection = Mock()
 
         task.args = {'_raw_params': 'Args1'}
@@ -60,7 +60,7 @@ class TestCopyResultExclude(unittest.TestCase):
 
         play_context = Mock()
         task = MagicMock(Task)
-        task.async = False
+        task.async_val = False
         connection = Mock()
 
         task.args = {'_raw_params': 'Args1'}
@@ -75,7 +75,7 @@ class TestCopyResultExclude(unittest.TestCase):
 
         play_context = Mock()
         task = MagicMock(Task)
-        task.async = False
+        task.async_val = False
         connection = Mock()
 
         task.args = {'_raw_params': 'Args1'}
@@ -92,7 +92,7 @@ class TestCopyResultExclude(unittest.TestCase):
 
         play_context = Mock()
         task = MagicMock(Task)
-        task.async = False
+        task.async_val = False
         connection = Mock()
 
         task.args = {'_raw_params': 'Args1'}
diff --git a/test/units/plugins/action/test_synchronize.py b/test/units/plugins/action/test_synchronize.py
index 53d73c500ce..ad78f9ccaf0 100644
--- a/test/units/plugins/action/test_synchronize.py
+++ b/test/units/plugins/action/test_synchronize.py
@@ -46,7 +46,7 @@ class TaskMock(object):
     args = {'src': u'/tmp/deleteme',
             'dest': '/tmp/deleteme',
             'rsync_path': 'rsync'}
-    async = None
+    async_val = None
     become = None
     become_user = None
     become_method = None