On Wed, May 29, 2013 at 8:49 PM, rusi <rustompm...@gmail.com> wrote: > On May 30, 6:14 am, Ma Xiaojun <damage3...@gmail.com> wrote: >> What interest me is a one liner: >> print '\n'.join(['\t'.join(['%d*%d=%d' % (j,i,i*j) for i in >> range(1,10)]) for j in range(1,10)]) > > Ha,Ha! The join method is one of the (for me) ugly features of python. > You can sweep it under the carpet with a one-line join function and > then write clean and pretty code: > > #joinwith > def joinw(l,sep): return sep.join(l)
I don't object to changing the join method (one of the more shoe-horned string methods) back into a function, but to my eyes you've got the arguments backward. It should be: def join(sep, iterable): return sep.join(iterable) Putting the separator first feels more natural to me because I expect the separator to usually be short as compared to the iterable, which is often a longer expression (as is the case in both of your subsequent usages). Placing the separator first also preserves consistency of interface with the str.join and bytes.join functions, as well as the older string.join function. -- http://mail.python.org/mailman/listinfo/python-list
