KraftDiner schrieb: > I had a structure that looked like this > ((0,1), (2, 3), (4, 5), (6,7) > > I changed my code slightly and now I do this: > odd = (1,3,5,7) > even = (0,2,4,6) > all = zip(even, odd) > > however the zip produces: > [(0, 1), (2, 3), (4, 5), (6, 7)] > > Which is a list of tuples.. I wanted a tuple of tuples...
Use tuple(zip(...)) There is a reason that zip returns a list: appending to a list is considered a "natural" operation, whereas extending an immutable(!) tuple creates a _new_ tuple for each entry. Which is a comparable costly operation - actually quadratic complexity instead of linear. So - if you need a tuple afterwards, convert it as shown above. Diez -- http://mail.python.org/mailman/listinfo/python-list
