我在Python中編寫了一個(gè)小程序，該程序在兩個(gè)類別之間隨機(jī)選擇，并相應(yīng)地子集數(shù)據(jù)幀。完成后，它會(huì)選擇一行并提出問題和潛在的選擇。問題和選項(xiàng)位于數(shù)據(jù)幀的行中的兩個(gè)不同列下。到目前為止，它運(yùn)行良好;問題是當(dāng)我試圖將其與kivy相結(jié)合時(shí)。我不明白行動(dòng)的順序是如何發(fā)生的?；旧?，我希望能夠通過kivy文件在屏幕上包含問題和選擇。到目前為止，我能夠顯示它們，但看起來問題中的值與選擇列中的值不匹配。我的直覺告訴我，我的kivy文件運(yùn)行“Choosing_category”兩次，而不是只運(yùn)行一次并獲取適當(dāng)?shù)妮敵?。有誰知道我該如何解決這個(gè)問題？以下是我到目前為止所擁有的：tryapp.pyimport kivyfrom kivy.app import Appimport pandas as pdimport numpy as npfrom kivy.uix.screenmanager import ScreenManager, Screen, FadeTransitionkivy.require('1.11.1')class QuestionWindows(Screen):    def __init__(self,  **kwargs):        super(QuestionWindows, self).__init__(**kwargs)        self.prob = ''        self.word = ''        self.choice1 = ''        self.word = ''        self.df = pd.DataFrame()    def _get_df(self):        df = pd.DataFrame([['new', 'What is you favorite color?', 'blue?', 'blue', 0,0,0,0,0],                           ['familiar', 'What is your favorite fruit?', 'apple?', 'apple', 0,0,0,0,0],                           ['new', 'What is your favorite vegetable?', 'carrot?', 'carrot',0,0,0,0,0]],                          columns=['state', 'questions', 'choice1', 'answer', 'cnt', 'count_correct', 'error_count', 'total_error', 'total_correct'])        return df    def choosing_category(self):        # Loading the dataframe        self.df = self._get_df()        # Generating the category for which the question/answer will be sampled from        self.prob = np.random.choice(['new', 'familiar'], 1, p=[0.7, 0.3])        # Dealing with the condition on whether the state 'familiar' is not found in the data set        if self.prob not in self.df['state'].values:            self.prob = ['new']            self.prob = self.prob