I looked up the word zoeken -- it means find in English. I looked up the chapter and exercise in the online text "How to think like a computer scientist"
Its a good tutorial. I think the OP seems to get confused on basic concepts. Here is my stab at the exercise: #!/usr/bin/env python """This exercise is to take the find function, alter it so that it can specify an end point for the search. It is problem 2 at the end of this chapter: http://openbookproject.net/thinkcs/python/english2e/ch15.html The author notes that end should default to len(str), but it can't since default parameters are initialized when the function is defined and not when it is invoked. """ # this is from the author's text def find(str, ch, start=0): index = start while index < len(str): if str[index] == ch: return index index = index + 1 return -1 # this I believe is the concept the author was looking to get the reader to understand def find2(str, ch, start=0, end = None): if end == None: end = len(str) index = start while index < end: if str[index] == ch: return index index = index + 1 return -1 -- Joel Goldstick _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
