Fixed unexisting imports

promise/async_.py

@@ -1,8 +1,8 @@
 # Based on https://github.com/petkaantonov/bluebird/blob/master/src/promise.js
 from collections import deque
-from typing import Callable, Optional, Union  # flake8: noqa
 if False:
     from .promise import Promise
+    from typing import Callable, Optional, Union  # flake8: noqa
 
 
 class Async(object):

promise/dataloader.py

@@ -1,17 +1,11 @@
 from collections import Iterable, namedtuple
 from functools import partial
 
-from typing import List, Sized  # flake8: noqa
-
 from .promise import Promise, async_instance, get_default_scheduler
-from typing import Any
-from typing import Callable
-from typing import Optional
-from typing import Tuple
-from typing import Union
-from typing import Iterator
-from typing import Iterable
-from typing import Hashable
+if False:
+    from typing import (
+        List, Sized, Callable, Optional, Tuple, Union, Iterator, Hashable
+    )  # flake8: noqa
 
 
 def get_chunks(iterable_obj, chunk_size=1):

promise/iterate_promise.py

@@ -1,8 +1,7 @@
 # flake8: noqa
-from typing import Iterator
-
 if False:
     from .promise import Promise
+    from typing import Iterator
 
 
 def iterate_promise(promise):

promise/promise.py

@@ -5,19 +5,21 @@
 from types import TracebackType
 
 from six import reraise  # type: ignore
-from typing import (List, Any, Callable, Dict, Iterator, Optional,  # flake8: noqa
-                    Tuple, Union, TypeVar, Generic, Hashable)
-
 from .async_ import Async
 from .compat import (Future, ensure_future, iscoroutine,  # type: ignore
                      iterate_promise)  # type: ignore
 from .utils import deprecated, integer_types, string_types, text_type, binary_type, warn
 from .promise_list import PromiseList
 from .schedulers.immediate import ImmediateScheduler
+from typing import TypeVar, Generic
 # from .schedulers.gevent import GeventScheduler
 # from .schedulers.asyncio import AsyncioScheduler
 # from .schedulers.thread import ThreadScheduler
 
+if False:
+    from typing import (List, Any, Callable, Dict, Iterator, Optional,  # flake8: noqa
+                        Tuple, Union, Generic, Hashable)
+
 
 default_scheduler = ImmediateScheduler()
 

promise/promise_list.py

@@ -1,9 +1,9 @@
 from functools import partial
 from collections import Iterable
-from typing import (Any, Optional, Tuple, Union, List,
-                    Type, Collection)  # flake8: noqa
 if False:
     from .promise import Promise
+    from typing import (Any, Optional, Tuple, Union, List,
+                        Type, Collection)  # flake8: noqa
 
 
 class PromiseList(object):

promise/schedulers/immediate.py

@@ -1,7 +1,7 @@
 from threading import Event
-from typing import Callable, Any, Optional  # flake8: noqa
 if False:
     from ..promise import Promise
+    from typing import Callable, Any, Optional  # flake8: noqa
 
 
 class ImmediateScheduler(object):