Made changes per review

Author: tekktrik

adafruit_ht16k33/ht16k33.py

@@ -13,10 +13,11 @@
 
 from adafruit_bus_device import i2c_device
 from micropython import const
-from busio import I2C
 
 try:
     from typing import Optional
+    from _typing import ReadableBuffer
+    from busio import I2C
 except ImportError:
     pass
 
@@ -57,7 +58,7 @@ def __init__(
         self.blink_rate = 0
         self.brightness = brightness
 
-    def _write_cmd(self, byte: "_typing.ReadableBuffer"):
+    def _write_cmd(self, byte: ReadableBuffer):
         self._temp[0] = byte
         with self.i2c_device:
             self.i2c_device.write(self._temp)

adafruit_ht16k33/matrix.py

@@ -12,6 +12,7 @@
 
 try:
     from typing import Optional
+    from PIL import Image
 except ImportError:
     pass
 
@@ -210,7 +211,7 @@ def fill(self, color):
         if self._auto_write:
             self.show()
 
-    def image(self, img: "PIL.Image"):
+    def image(self, img: Image):
         """Set buffer to value of Python Imaging Library image.  The image should
         be a size equal to the display size."""
         imwidth, imheight = img.size

adafruit_ht16k33/segments.py

@@ -9,11 +9,11 @@
 """
 
 from time import sleep
-from busio import I2C
 from adafruit_ht16k33.ht16k33 import HT16K33
 
 try:
     from typing import Union, List, Tuple
+    from busio import I2C
 except ImportError:
     pass