Stupid novice error in closures in Python

I am wrapping a bunch of functions in python, so that they could take different arguments:

for fun in functions:
    def wrapper(state):
        return fun(state.current)
    # store wrapper as wrapped function

What's wrong with this picture? All wrappers end up calling the same function - the last in the list.

Took me about half an hour to figure it out. Closure in Python wraps a _variable_, not the object that the variable holds like it does in Java. The variable is shared between all wrappers - it's "fun". So all wrappers end up calling whatever is the value of "fun" at the time of call to the wrapper - the last function in the list. At the time of call to the wrapper, not wrapper creation!

The solution is of course

def wrap_function(fun):
    def wrapper(state):
        return fun(state.current)
    return wrapper    

for fun in functions:
    wrapped_function = wrap_function(fun)

Now each wrapper gets its own "fun" variable - the one inside the particular invocation of wrap_function. Hurray!