Fixed flicker for printing numbers

Author: Melissa LeBlanc-Williams

adafruit_ht16k33/segments.py

@@ -199,6 +199,8 @@ def _text(self, text):
 
     def _number(self, number):
         """Display the specified decimal number."""
+        auto_write = self._auto_write
+        self._auto_write = False
         string = "{}".format(number)
         if len(string) > 4:
             if string.find('.') > 4:
@@ -208,6 +210,7 @@ def _number(self, number):
         if '.' in string:
             places += 1
         self._text(string[:places])
+        self._auto_write = auto_write
 
 class Seg7x4(Seg14x4):
     """Numeric 7-segment display. It has the same methods as the alphanumeric display, but only
@@ -306,4 +309,4 @@ def __setitem__(self, key, value):
     def __getitem__(self, key):
         if key > self._num_of_colons - 1:
             raise ValueError("Trying to access a non-existent colon.")
-        return bool(self._disp._get_buffer(0x04) & self.MASKS[key])
+        return bool(self._disp._get_buffer(0x04) & self.MASKS[key])