"Peter Hansen" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Roger L. Cauvin wrote: >> Sorry for the confusion. The correct pattern should reject all strings >> except those in which the first sequence of the letter 'a' that is >> followed by the letter 'b' has a length of exactly three. >> >> Hope that's clearer . . . . > > Examples are a *really* good way to clarify ambiguous or complex > requirements. In fact, when made executable they're called "test cases" > :-), and supplying a few of those (showing input values and expected > output values) would help, not only to clarify your goals for the humans, > but also to let the proposed solutions easily be tested.
Good suggestion. Here are some "test cases": "xyz123aaabbab" accept "xyz123aabbaab" reject "xayz123aaabab" accept "xaaayz123abab" reject "xaaayz123aaabab" accept -- Roger L. Cauvin [EMAIL PROTECTED] (omit the "nospam_" part) Cauvin, Inc. Product Management / Market Research http://www.cauvin-inc.com -- http://mail.python.org/mailman/listinfo/python-list
