py3.7 typing dependency fix

andrewleap-optimizely · andrewleap-optimizely · commit 7901a4ac5700 · 2022-06-16T17:24:34.000-04:00
diff --git a/optimizely/entities.py b/optimizely/entities.py
@@ -12,7 +12,13 @@
 # limitations under the License.
 from __future__ import annotations
 from typing import Any, Optional
-from typing_extensions import TypedDict
+
+try:
+    # python 3.7
+    from typing_extensions import TypedDict
+except ImportError:
+    # python 3.8 +
+    from typing import TypedDict  # type: ignore
 
 
 class BaseEntity:
diff --git a/optimizely/event_dispatcher.py b/optimizely/event_dispatcher.py
@@ -18,14 +18,21 @@
 
 from requests import exceptions as request_exception
 from typing import Optional
-from typing_extensions import Protocol
 
 from .helpers import enums
 from . import event_builder
 
 REQUEST_TIMEOUT = 10
 
 
+try:
+    # python 3.7
+    from typing_extensions import Protocol
+except ImportError:
+    # python 3.8 +
+    from typing import Protocol  # type: ignore
+
+
 class CustomEventDispatcher(Protocol):
     """Interface to enforce required method"""
     def dispatch_event(self, event: Optional[event_builder.Event]) -> None:
diff --git a/optimizely/helpers/condition.py b/optimizely/helpers/condition.py
@@ -12,7 +12,6 @@
 # limitations under the License.
 
 from __future__ import annotations
-from typing_extensions import Literal
 import json
 import numbers
 from typing import Any, Callable, Optional
@@ -22,6 +21,13 @@
 from .enums import Errors
 from .enums import VersionType
 
+try:
+    # python 3.7
+    from typing_extensions import Literal
+except ImportError:
+    # python 3.8 +
+    from typing import Literal  # type: ignore
+
 
 class ConditionOperatorTypes:
     AND = 'and'
