CODEWITHSUNDEEP
pythonpython-2.7tkinter
Sebastian
Sebastian

Reputation: 3

Using the after-method with Tkinter

I'm having troubles using the "after" method in my GUI. The goal is to create a loop, which calculates "flow" with given input variables. So far I didn't manage to get my code running, with the documentation on "after" or this post Tkinter only calls after_idle once

My Code:

import Tkinter as tk
from Tkinter import *
import ttk
import tkMessageBox

class Regeln():
    def __init__(self):
        bla=1
    def lesen(self,faktor,stromdichte,flaeche,anzahl,elektronen,konzentration):
        self.faktor=faktor
        self.stromdichte=stromdichte
        self.flaeche=flaeche
        self.anzahl=anzahl
        self.elektronen=elektronen
        self.konzentration=konzentration
        try:
            self.faktor=float(self.faktor)
            self.stromdichte=float(self.stromdichte)
            self.flaeche=float(self.flaeche)
            self.anzahl=float(self.anzahl)
            self.elektronen=float(self.elektronen)
            self.konzentration=float(self.konzentration)
        except:
            tkMessageBox.showerror("Achtung!","Nur Zahlen eingeben!")
        try:
            1/(self.faktor*self.stromdichte*self.flaeche*self.anzahl*self.elektronen*self.konzentration)         
        except:
            tkMessageBox.showerror("Achtung!","Nur Werte größer 0 eingeben!")
        self.algorithmus()

    def algorithmus(self):
        flow=self.faktor*self.stromdichte*self.elektronen*60/(96485.34*self.konzentration*0.75/100)*self.flaeche*self.anzahl/1000
        print flow

        self.after(1500,self.algorithmus)

With this I get an "AttributeError". Anybody has any idea how to get it running?

Upvotes: 0

Views: 1052

Answers (1)

Bryan Oakley
Bryan Oakley

Reputation: 385920

after is a method available on all tkinter widgets. In your specific case, self is not a widget, so naturally it won't have this method.

You need to call after from an existing widget. For example, if you initially created your GUI with something like this:

root = tk.Tk()

You can later call after like this:

root.after(...)

Upvotes: 3

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