Thanks, Troy. I never cease to be amazed at what can be discovered by reading the manual! <self bangs head on wall>
Mike Troy Melhase wrote: > On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: >> While trying to write a recursive function involving lists, I came >> across some (to me) odd behavior which I don't quite understand. Here's >> a trivial function showing the problem. > > from http://docs.python.org/ref/function.html : > > Default parameter values are evaluated when the function definition is > executed. This means that the expression is evaluated once, when the > function is defined, and that that same ``pre-computed'' value is used > for each call. This is especially important to understand when a > default parameter is a mutable object, such as a list or a dictionary: > if the function modifies the object (e.g. by appending an item to a > list), the default value is in effect modified. -- http://mail.python.org/mailman/listinfo/python-list
