fixed support for python3.7 #737

customtkinter/windows/widgets/ctk_progressbar.py

@@ -1,6 +1,10 @@
 import tkinter
 import math
-from typing import Union, Tuple, Optional, Literal, Callable
+from typing import Union, Tuple, Optional, Callable
+try:
+    from typing import Literal
+except ImportError:
+    from typing_extensions import Literal
 
 from .core_rendering import CTkCanvas
 from .theme import ThemeManager

customtkinter/windows/widgets/ctk_segmented_button.py

@@ -1,5 +1,9 @@
 import tkinter
-from typing import Union, Tuple, List, Dict, Callable, Optional, Literal
+from typing import Union, Tuple, List, Dict, Callable, Optional
+try:
+    from typing import Literal
+except ImportError:
+    from typing_extensions import Literal
 
 from .theme import ThemeManager
 from .font import CTkFont

customtkinter/windows/widgets/font/ctk_font.py

@@ -1,6 +1,10 @@
 from tkinter.font import Font
 import copy
-from typing import List, Callable, Tuple, Optional, Literal
+from typing import List, Callable, Tuple, Optional
+try:
+    from typing import Literal
+except ImportError:
+    from typing_extensions import Literal
 
 from ..theme import ThemeManager