Scope of lambda functions and their parameters?

Question

I need a callback function that is almost exactly the same for a series of gui events. The function will behave slightly differently depending on which event has called it.

Answer 1

Yes, that's a problem of scope, it binds to the outer m, whether you are using a lambda or a local function. Instead, use a functor:

class Func1(object):
    def __init__(self, callback, message):
        self.callback = callback
        self.message = message
    def __call__(self):
        return self.callback(self.message)
funcList.append(Func1(callback, m))