Aidan <[EMAIL PROTECTED]> wrote: > gaurav kashyap wrote: >> Hi all, >> I am using python version 2.3.in a program , >> I have called the sort function.Wherein, >> a.sort(reverse=True) >> is giving the following error: >> >> TypeError: sort() takes no keyword arguments. >> >> It works in python 2.4,What can be the alternative in python 2.3 >> >> Thanks , >> Gaurav >> > > You could try: > > >>> a.sort() > >>> a = a[::-1] > > You could, but you should also be aware that there is a subtle difference. The 'reverse' keyword argument gives a stable reverse sort, sorting and then reversing something is not stable. e.g.
>>> data = [(1, 'zzz'), (1, 'abc'), (2, 'def'), (1, 'pqr'), (2, 'jkl')] >>> a = data[:] >>> a.sort(lambda p,q: cmp(p[0],q[0]), reverse=True) >>> a [(2, 'def'), (2, 'jkl'), (1, 'zzz'), (1, 'abc'), (1, 'pqr')] >>> a = data[:] >>> a.sort(lambda p,q: cmp(p[0],q[0])) >>> a[::-1] [(2, 'jkl'), (2, 'def'), (1, 'pqr'), (1, 'abc'), (1, 'zzz')] -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
