Pointed matrix shift functions to use HT16K33 shift functions

adafruit_featherwing/matrix_featherwing.py

@@ -110,11 +110,7 @@ def shift_right(self, rotate=False):
 
         :param rotate: (Optional) Rotate the shifted pixels to the left side (default=False)
         """
-        for y in range(0, self.rows):
-            last_pixel = self._matrix[self.columns - 1, y] if rotate else 0
-            for x in range(self.columns - 1, 0, -1):
-                self._matrix[x, y] = self._matrix[x - 1, y]
-            self._matrix[0, y] = last_pixel
+        self._matrix.shift_right(rotate)
         self._update()
 
     def shift_left(self, rotate=False):
@@ -123,11 +119,7 @@ def shift_left(self, rotate=False):
 
         :param rotate: (Optional) Rotate the shifted pixels to the right side (default=False)
         """
-        for y in range(0, self.rows):
-            last_pixel = self._matrix[0, y] if rotate else 0
-            for x in range(0, self.columns - 1):
-                self._matrix[x, y] = self._matrix[x + 1, y]
-            self._matrix[self.columns - 1, y] = last_pixel
+        self._matrix.shift_left(rotate)
         self._update()
 
     def shift_up(self, rotate=False):
@@ -136,11 +128,7 @@ def shift_up(self, rotate=False):
 
         :param rotate: (Optional) Rotate the shifted pixels to bottom (default=False)
         """
-        for x in range(0, self.columns):
-            last_pixel = self._matrix[x, self.rows - 1] if rotate else 0
-            for y in range(self.rows - 1, 0, -1):
-                self._matrix[x, y] = self._matrix[x, y - 1]
-            self._matrix[x, 0] = last_pixel
+        self._matrix.shift_up(rotate)
         self._update()
 
     def shift_down(self, rotate=False):
@@ -149,11 +137,7 @@ def shift_down(self, rotate=False):
 
         :param rotate: (Optional) Rotate the shifted pixels to top (default=False)
         """
-        for x in range(0, self.columns):
-            last_pixel = self._matrix[x, 0] if rotate else 0
-            for y in range(0, self.rows - 1):
-                self._matrix[x, y] = self._matrix[x, y + 1]
-            self._matrix[x, self.rows - 1] = last_pixel
+        self._matrix.shift_down(rotate)
         self._update()
 
     @property

adafruit_featherwing/pixelmatrix.py

@@ -76,17 +76,16 @@ def _get_index(self, indices):
             if not 0 <= indices < self.rows * self.columns:
                 raise ValueError('The index of {} is out of range'.format(indices))
             return indices
-        elif isinstance(indices, slice):
+        if isinstance(indices, slice):
             return indices
-        elif len(indices) == 2:
+        if len(indices) == 2:
             x, y = indices
             if not 0 <= x < self.columns:
                 raise ValueError('The X value of {} is out of range'.format(x))
             if not 0 <= y < self.rows:
                 raise ValueError('The Y value of {} is out of range'.format(y))
             return y * self.columns + x
-        else:
-            raise ValueError('Index must be 1 or 2 number')
+        raise ValueError('Index must be 1 or 2 number')
 
     def _update(self):
         """

adafruit_featherwing/rtc_featherwing.py

@@ -78,8 +78,7 @@ def _get_time_value(self, unit):
         now = self._get_now()
         if unit in now:
             return now[unit]
-        else:
-            raise ValueError('The specified unit of time is invalid')
+        raise ValueError('The specified unit of time is invalid')
 
     def _get_now(self):
         """