>>>>> SuperHik <[EMAIL PROTECTED]> (S) escribió: >S> [EMAIL PROTECTED] wrote: >>> python wrote: >>>> after del list , when I use it again, prompt 'not defined'.how could i >>>> delete its element,but not itself? >>> >>> This is a way: >>>>>> a = range(10) >>>>>> del a[:] >S> or simply >S> a = [] >>>>>> a >>> []
Then you *have* deleted the list and created a new one, which is different from keeping the list and deleting the elements: >>> a = range(10) >>> b = a >>> del a[:] >>> a [] >>> b [] >>> a.append(100) >>> a [100] >>> b [100] >>> a=[] >>> b [100] >>> -- Piet van Oostrum <[EMAIL PROTECTED]> URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
