Data commit

Task/Stair-climbing-puzzle/Python/stair-climbing-puzzle-1.py

@@ -0,0 +1,9 @@
+def step_up1():
+  """Straightforward implementation: keep track of how many level we
+     need to ascend, and stop when this count is zero."""
+  deficit = 1
+  while deficit > 0:
+    if step():
+      deficit -= 1
+    else:
+      deficit += 1

Task/Stair-climbing-puzzle/Python/stair-climbing-puzzle-2.py

@@ -0,0 +1,4 @@
+def step_up2():
+  "No numbers."
+  while not step():
+    step_up2() # undo the fall