Steven D'Aprano 写道: > On Mon, 21 Jan 2008 16:23:50 +0800, J. Peng wrote: > >> J. Peng 写道: >> >>> k = (i.split())[3] >>> y = (i.split())[1] >> btw, why can't I write the above two into one statement? >> >> (k,y) = (i.split())[3,1] > > I don't know. What's "i"? > > I'm guessing "i" is a string (and what a horrible choice of a name for a > string!) So i.split() will return a list. List indexing with multiple > arguments isn't defined, which is why you can't write > > k, y = (i.split())[3,1] >
Thanks. Then one have to split the list twice.Given the list is large,it's maybe not good for performance.Is it a more effective split way? -- http://mail.python.org/mailman/listinfo/python-list
