Hello, I've been using Python for some DES simulations because we don't need full C speed and it's so much faster for writing models. During coding I find it handy to assign a variable *unless it has been already assigned*: I've found that this is often referred to as "once" assigment.
The best I could come up with in Python is: try: variable except NameError: variable = method() I wonder if sombody has a solution (trick, whatever ...) which looks more compact in coding. Something like: once(variable, method) doesn't work, but it would be perfect. Of course I can preprocess the Python code but an all-Python solution would be more handy. Any suggestions? Thx in advance, Lorenzo -- http://mail.python.org/mailman/listinfo/python-list