TypeError when storing data in a JSON file.(KivyMD Python)

Question

I want to save some data from the user in a JSON file. But when I do that, a TypeError is appeared.

• TypeError: save_bio() takes 1 positional argument but 2 were given

In this program there are several other times to store data in a JSON file. But This does not happen in that cases.

Here is my Code

---

from kivy.lang.builder import Builder
from kivy.storage.jsonstore import JsonStore
from kivy.uix.screenmanager import Screen
from kivymd.app import MDApp
from kivymd.uix.button import MDFlatButton, MDRaisedButton
from kivymd.uix.dialog import MDDialog

screen_helper = """

ScreenManager:
    EditBio:
    Studio:

<EditBio>:
    name: 'edit_bio'
    orientation: "vertical"
    spacing: "10dp"
    size_hint_y: None
    height: "50dp"
    MDTextField:
        id : bio_text
        text: "Feel Everything"


<Studio>:
    name : 'studio'
    MDRaisedButton:
        text : 'Edit Bio'
        id: edit_profile_pic
        pos_hint: {'center_x':0.5,'center_y':0.5}
        user_font_size: "25sp"
        on_release : app.edit_bio_dialog()
    MDLabel:
        text:'Bio'
        font_style: 'Subtitle1'
        halign: 'center'
        pos_hint : {'center_x':0.255,'center_y':0.538}

"""


class EditBio(Screen):
    pass


class Studio(Screen):
    pass


class Mode(MDApp):
    bio_dialog = None

    def build(self):
        return Builder.load_string(screen_helper)

    def save_bio(self):
        self.bio = self.root.get_screen('edit_bio').ids.bio_text.text

        self.store_bio.put('BioInfo', bio=self.bio)
        self.bio_changer()

    def bio_changer(self):
        self.root.get_screen('studio').ids.bio.text = f"{self.store_bio.get('BioInfo')['bio']}"

    def on_start(self):
        self.store_bio = JsonStore("bio.json")
        self.root.get_screen('studio').manager.current = 'studio'

    def edit_bio_dialog(self):
        if not self.bio_dialog:
            self.bio_dialog = MDDialog(
                title="Edit Bio:",
                type="custom",
                content_cls=EditBio(),
                buttons=[
                    MDFlatButton(
                        text="CANCEL", font_style='Button', text_color=self.theme_cls.primary_color
                    ),
                    MDRaisedButton(
                        text="OK", md_bg_color=self.theme_cls.primary_color, on_release=self.save_bio
                    ),
                ],
            )
        self.bio_dialog.open()


Mode().run()

---

Please help me to find the solution.

Answer 1

When your Button is released, it calls self.save_bio() and passes self and the Button instance as arguments. If you don't use the Button instance in the save_bio() method, just add *args to its definition:

def save_bio(self, *args):
    self.bio = self.root.get_screen('edit_bio').ids.bio_text.text

    self.store_bio.put('BioInfo', bio=self.bio)
    self.bio_changer()