Function question

[John]

Hi I have a question:

Let's say there is a function with two arguments.
def add(a,b): return a+b

What I want to do is:
I want to get 'a' dynamically..
But once a value is decided, I want a separate function (say, new_add) that
does
new_add(b) (equals to) add(a,b)

That is, I want the function definition to be dynamic.

Would that be possible? Any comment would be greatly appreciated.