Hi
i want to implement a dynamic relation mechanism with python something like:

a:=10
b:=30
c:=a+b
print c
a+=20
print c

output:

40
60

c is always result of a+b.
so if a or b change, then c automatically updates value. i write a code in C# and do this by set and get mechanism. now want to translate it to python code for using in another program (FontLab Studio 5). I'm not so familiar with Python. does he have a get,set feature like C#? if not ho to implement one?