Added Black and White Squares

comments needed - note for self

Author: DirDraggo

CodeHS/2/16/Black-And-White-Squares-Travis.py

@@ -0,0 +1,31 @@
+speed(0)
+penup()
+backward(120)
+
+sqr_size=30
+def black_and_white_squares():
+    accum=0
+    for i in range(3):
+        if accum%2==0:
+            make_black_square()
+            forward_buffer()
+        make_white_square()
+        forward_buffer()
+        accum=accum+2
+def make_white_square():
+    for i in range(4):
+        pendown()
+        forward(sqr_size)
+        left(90)
+def make_black_square():
+    begin_fill()
+    for i in range(4):
+        pendown()
+        forward(sqr_size)
+        left(90)
+    end_fill()
+def forward_buffer():
+    penup()
+    forward(sqr_size+10)
+    pendown()
+black_and_white_squares()