On Dec 7, 9:54 am, m...@pixar.com wrote: > How can I make a "var" parm, where the called function can modify > the value of the parameter in the caller? > > def f(x): > x = x + 1
Short ansver: You can modify function parameters if they are mutable. If they are immutable any attempt to modify the parameter will trigger a copy. You cannot modify parameters by rebinding. x = x + 1 is a rebinding. x += 1 is not. If you need to modify immutable parameters or do the modification by rebinding, pass the variable back. Python allows multiple return values. -- http://mail.python.org/mailman/listinfo/python-list
