python a écrit : > after del list , when I use it again, prompt 'not defined'.how could i > delete its element,but not itself?
FWIW, del don't delete an object (not directly at least), it just delete the name<->object association. If (and only if) it was the only name referencing that object, then the object will be disposed too. >>> list1 = [1, 2] >>> list2 = list1 >>> id(list1) 1078043852 >>> id(list2) 1078043852 >>> del list2 >>> list1 [1, 2] >>> list2 Traceback (most recent call last): File "<stdin>", line 1, in ? NameError: name 'list2' is not defined >>> -- http://mail.python.org/mailman/listinfo/python-list
