On Thu, 05 Jul 2007 22:03:59 +0000, rshepard wrote: > Haven't found an answer to my question in the books and other docs I have > available, so I am asking here. > > I have three lists of data retrieved from database tables. I want to cycle > through all three lists using nested FOR loops. What is the behavior if > there are no data in the list used in the middle loop?
Why don't you try it and see for yourself? types = ["Type A", "Type B", "Type C"] subtypes = [] details = [1, 2, 3] > Example: > > for a in types: > for b in subtypes: > for c in details: > do some processing > > Not every item in the 'types' list will have an associated 'subtype'. Does > the index ignore that loop and drop to the one nested beneath it? Be sure to write back and let us know what you discover. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
