Using value from textinput in python

Question

I want to make an app which would print text entered in TextInput when I press Print. After a couple of hours of searching the web I still can't understand how to assing value of TextInput to variable in python script.

This is Kivy code:

<SimpleRoot>:
    orientation:"vertical"
    padding: root.width * .02, root.height * .02
    spacing: "10dp"
    TextInput:
        id: txt
    Button:
        text: 'Print'
        on_press: root.printTxt(txt.text)

Python script:

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
from kivy.uix.boxlayout import BoxLayout

class SimpleRoot(BoxLayout): # 2
    def printTxt(text):
        print txt.text


    pass

class SimpleApp(App):  # 1  
    def build(self):
        # Return root widget 
        return SimpleRoot()

if __name__ == "__main__":  
    SimpleApp().run()

What happens when you run now? Do you get some sort of error? — Malonge
– Malonge, Commented Sep 16, 2015 at 16:27
Yes. When I write something in TextInput and click 'print' I get: File "D:/Documents/Python\simple.kv", line 9, in <module> on_press: root.printTxt(txt.text) TypeError: printTxt() takes exactly 1 argument (2 given) — aplaninsek
– aplaninsek, Commented Sep 16, 2015 at 16:40

Malonge · Accepted Answer · 2015-09-16 17:00:32Z

2

Try changing this:

class SimpleRoot(BoxLayout): # 2
    def printTxt(text):
        print txt.text

To this

class SimpleRoot(BoxLayout): # 2
    def printTxt(self, text):
        print text

edited Sep 16, 2015 at 17:00

answered Sep 16, 2015 at 16:47

Malonge

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2 Comments

aplaninsek Over a year ago

I did, but now it returns this error: File "D:/Documents/Python\simple.kv", line 9, in <module> on_press: root.printTxt(txt.text) File "D:/Documents/Python/textinput.py", line 8, in printTxt print txt.text NameError: global name 'txt' is not defined

Malonge Over a year ago

Look at my new edit and see if that works. I got rid of the txt.text and replaced with just text

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