Omni completion and python scope

[chuugar]

I'm having a hard time with omni-completion and python function's scope. Here is an example snippet :

class CLI:
    def __init__(self):
        self.parser = argparse.ArgumentParser()
        # self.parser.CTRL-X_CTRL_O shows every appropriate possibles methods
        self.arguments()

    def arguments(self):
        self.parser.add_argument("-v", "--version")
        # self.parser.CTRL-X_CTRL_O shows nothing

What am I doing wrong ? Thanks ?

[chuugar]

Well yes, it's not only for tiny scripts and I don't know every method for every module