Hi, We were talking about this subject a little while back. In case it matters to you, Learning Python, Third Edition says that for loops are faster than while loops because for loops use c to speed them up. It says that while loops use pure Python. This is my non-technical paraphrase of what I was just reading. The same little section also says that for loops are easier to code and easier to read. Thanks. Jim Thanks. Jim ________________________________ This e-mail and any attachments to it are confidential and are intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this e-mail without the author's prior permission. The views expressed in this e-mail message do not necessarily represent the views of Highmark Inc., its subsidiaries, or affiliates.