Is there a way to call a function on screen load with kivy?

Question

I have a kivy program where I need the labels to populate with the data given from a function within my screen class. It works with the update button properly however I would also like for it to populate the labels on load. Here is the python file and the kv file: py: .kv: I have tried using things like

Accepted Answer

Thanks to a comment on my question I did some more research and reworked the code slightly and this were my findings for anyone else who is having this issue. I use on_pre_enter to call my function and within the function simply update the &#8220;label&#8221; variables I have to change the text within the kv file. Here is how it looks. I left some of the old code in but commented it out so you can see kind of how it looked before:.py:from kivy import *from kivy.app import Appfrom kivy.clock import Clockfrom kivy.lang import Builderfrom kivy.uix.screenmanager import ScreenManager, Screenfrom kivy.properties import StringPropertyimport requestsfrom bs4 import BeautifulSoupclass CurrentHighScores(Screen):    def on_pre_enter(self, *args):        self.speed_scraper()    highscore = None    highscore_two = None    highscore_three = None    highscore_four = None    highscore_five = None    label_start_one = StringProperty(' ')    label_start_two = StringProperty(' ')    label_start_three = StringProperty(' ')    label_start_four = StringProperty(' ')    label_start_five = StringProperty(' ')    def speed_scraper(self):        URL = 'http://algoodspeeders.org/alpr/speederid.php'        headers = {            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36"}        page = requests.get(URL, headers=headers)        soup = BeautifulSoup(page.content, 'html.parser')        indexes = [3, 5]        speed_data = []        for tbody in soup.findAll('tbody'):            for tr in tbody.findAll('tr'):                speed_values = [td.text for td in tr.findAll('td')]                speed_vals = [speed_values[x] for x in indexes]                speed_data.append(speed_vals)        speed_data.sort(reverse=True)        # print(speed_data[0:5])        self.highscore = speed_data[0]        self.highscore_two = speed_data[1]        self.highscore_three = speed_data[2]        self.highscore_four = speed_data[3]        self.highscore_five = speed_data[4]        self.label_start_one = ('1st: ' + str(self.highscore[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore[1]))        self.label_start_two = ('2nd: ' + str(self.highscore_two[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_two[1]))        self.label_start_three = ('3rd: ' + str(self.highscore_three[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_three[1]))        self.label_start_four = ('4th: ' + str(self.highscore_four[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_four[1]))        self.label_start_five = ('5th: ' + str(self.highscore_five[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_five[1]))        '''self.ids.high_one.text = '1st: ' + str(self.highscore[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore[1])        self.ids.high_two.text = '2nd: ' + str(self.highscore_two[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_two[1])        self.ids.high_three.text = '3rd: ' + str(self.highscore_three[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_three[1])        self.ids.high_four.text = '4th: ' + str(self.highscore_four[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_four[1])        self.ids.high_five.text = '5th: ' + str(self.highscore_five[0]) + ' MPH | ' + 'License Plate No. ' + str(            self.highscore_five[1])        print('High Scores List')        print('----------------')        print('1st: ' + str(self.highscore[0]) + ' MPH | ' + 'License Plate No. ' + str(self.highscore[1]))        print('2nd: ' + str(self.highscore_two[0]) + ' MPH | ' + 'License Plate No. ' + str(self.highscore_two[1]))        print('3rd: ' + str(self.highscore_three[0]) + ' MPH | ' + 'License Plate No. ' + str(self.highscore_three[1]))        print('4th: ' + str(self.highscore_four[0]) + ' MPH | ' + 'License Plate No. ' + str(self.highscore_four[1]))        print('5th: ' + str(self.highscore_five[0]) + ' MPH | ' + 'License Plate No. ' + str(self.highscore_five[1]))'''class ScreenManage(ScreenManager):    passkv = Builder.load_file('algoodspeed.kv')class AlgoodSpeedApp(App):    def build(self):        return kvif __name__ == '__main__':    AlgoodSpeedApp().run().kvScreenManage:    CurrentHighScores:<CurrentHighScores>    name: 'CurrentHighScores'    on_enter: print('working')    GridLayout:        cols: 1        Label:            name: 'current_high_scores'            text: 'Current High Speeds For Cooper Rd:'            font_size: 30        Label:            id: high_one            text: root.label_start_one        Label:            id: high_two            text: root.label_start_two        Label:            id: high_three            text: root.label_start_three        Label:            id: high_four            text: root.label_start_four        Label:            id: high_five            text: root.label_start_five        Button:            id: update            text: 'Update Current High Speeds'            on_release:                root.speed_scraper()

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