Kivy: How To Display 'Correct!' When Input Is Correct?

I'm trying to create a system that will show 'correct' when the input is correct. But I'm so confused about how classes and functions work even after watching tutorials and reading

Solution 1:

Here is an example of how you can use a TextInput widget to get some user input. Then you need to define a function that will check what the user put in to the name (the source) of your Image widget. Call that function with some button to check the user input. Here is a very short example of how to do that (make sure the files are named main.py and main.kv)

main.py

from kivy.app import App

class MainApp(App):
    def check_answer(self, text_to_check, *args):
        # You can ignore what is held in *args, but keep it there
        # Get the name of the image
        the_image = self.root.ids['the_image']
        the_image_name = the_image.source

        # Get the user's input
        print("the image name was: ", the_image_name)
        print("Your guess was: ", text_to_check)
        if the_image_name == text_to_check:
            print("Correct!")
        else:
            print("Incorrect :(")

MainApp().run()

main.kv

GridLayout:
    cols: 1
    Image:
        id: the_image
        source: "a.png"
    TextInput:
        id: the_text_input
        hint_text: "Type your answer here"
    Button:
        text: "Check Answer"
        on_release:
            # Call the function we defined in the python file
            # Pass the text that the user put in by referencing the id of the
            # TextInput and getting the value of the text
            app.check_answer(the_text_input.text)