class issue

class Test:
    def f1(self, parameter, opt=1):
        self.f1 = []
        self.parameter = parameter
        print('please input %s or press q\n' % parameter)
        while True:
            b = input('one of %s' % parameter)
            if b=='q':
                break
            else:
                self.f1.append(b)
        if opt:
            self.f1 = set(self.f1)
        else:
            self.f1 = dict.fromkeys(self.f1, {})
    def f2(self, parameter):
        self.parameter = parameter
        dictionary = self.f1('keys', 0)
        for name in dictionary:
            print('please input values')
            self.f1[name] = self.f1('values')

x = Test()
x.f1('inputted parameter')
y = Test()
y.f2('another inputted parameter')