extra credit - added step option to add_numbers function

Author: mwarkentin

ex33.py

@@ -1,17 +1,17 @@
-def add_numbers(max):
+def add_numbers(max, step=1):
     i = 0
     numbers = []
     while i < max:
         print "At the top i is %d" % i
         numbers.append(i)
 
-        i = i + 1
+        i = i + step
         print "Numbers now: ", numbers
         print "At the bottom i is %d" % i
 
     return numbers
 
-numbers = add_numbers(10)
+numbers = add_numbers(10, 5)
 
 print "The numbers: "