all: Reformat C and Python source code with tools/codeformat.py.

This is run with uncrustify 0.70.1, and black 19.10b0.

examples/pyb.py

@@ -1,17 +1,22 @@
 # pyboard testing functions for CPython
 import time
 
+
 def delay(n):
-    #time.sleep(float(n) / 1000)
+    # time.sleep(float(n) / 1000)
     pass
 
+
 rand_seed = 1
+
+
 def rng():
     global rand_seed
     # for these choice of numbers, see P L'Ecuyer, "Tables of linear congruential generators of different sizes and good lattice structure"
     rand_seed = (rand_seed * 653276) % 8388593
     return rand_seed
 
+
 # LCD testing object for PC
 # uses double buffering
 class LCD:
@@ -30,12 +35,12 @@ class LCD:
                 self.buf1[y][x] = self.buf2[y][x] = value
 
     def show(self):
-        print('') # blank line to separate frames
+        print("")  # blank line to separate frames
         for y in range(self.height):
             for x in range(self.width):
                 self.buf1[y][x] = self.buf2[y][x]
         for y in range(self.height):
-            row = ''.join(['*' if self.buf1[y][x] else ' ' for x in range(self.width)])
+            row = "".join(["*" if self.buf1[y][x] else " " for x in range(self.width)])
             print(row)
 
     def get(self, x, y):