"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Has anyone else felt a desire for a 'nochange' value
No. > resembling the 'Z'-state of a electronic tri-state output? Not familiar with that. > > var1 = 17 > var1 = func1() # func1() returns 'nochange' this time > print var1 # prints 17 > > It would be equivalent to: > > var1 = 17 > var2, bool1 = func1() > if bool1: > var1 = var2 > print var1 # prints 17 Simpler is var1 = 17 var2 = func1() if var2 is not 'nochange': var1 = var2 or var1 = func2(var1) with func2 conditionally returning the input instead of 'nochange'. The default return, of course, could be something other than var1. Conclusion: you can easily do what you want with Python as it is. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
