def create_default_groups(self):
        for group in self.groups:
            group = group.replace(" ", "_").lower()
            self[group] = NamedRequirements(group)
def __init__(self, *args, **kwargs):
        FloatConverter.__init__(self, *args, **kwargs)
        self.type_ = "float"
        self.regex = '-?\\d+(\\.\\d+)?'