I am trying to write a class inside a function... something like the following:
def func(**args): class BindArgs(object): foo = args['foo'] print 'foo is ', foo def __init__(self,args): print " hello, I am here" f = func(foo=2) I was hoping that print will be executed.. but the init block is not being executed... though print 'foo is ' stub runs... What am I missing?
I am trying to understand, how does this module works (https://github.com/tweepy/tweepy/blob/master/tweepy/binder.py)?
You just need to return an instance of the class...
def func(**args): class BindArgs(object): foo = args['foo'] print 'foo is ', foo def __init__(self,args): print " hello i am here" return BindArgs(args) #return an instance of the class f = func(foo=3) If you wanted to call it later like in the example from the comments, you could just do
def func(**args): class BindArgs(object): foo = args['foo'] print 'foo is ', foo def __init__(self,args): print " hello i am here" return BindArgs f = func(foo=3) f(args="yellow") 
_call method that is returned at the end ... but who knows Im not sure how thats invoked or used so I couldnt tell youuser_point=bind_api(**kwargs); user_point() they call the binding later ... since bind_api returns a method call ...__init__ you will see it does not invoke until you call the returned method ... which is exactly what you would expectInside func you're not actually initializing a new BindArgs object, so Python will not call the __init__() function. However, it does read through the class definition to use it inside the function scope, so it does execute the other print statement...
That's because init is only executed when an instance of the class is being created, which is not happening in your function. You have to explicitly call BindArgs(someobject) for that. However, the class is being defined when you call func, so the contents of the class definition are executed.
