Question

I’m following this intro to tkinter, specifically the dialog entry example on page 29. http://www.ittc.ku.edu/~niehaus/classes/448-s04/448-standard/tkinter-intro.pdf

I’m getting the following error:

d = MyDialog(root)
TypeError: this constructor takes no arguments

I deleted the argument from the variable d, and the argument for wait_window (see the code below) and the program will run, however there is no entry field.

Here is the code

from Tkinter import *

class MyDialog:

    def init(self, parent):

        top = Toplevel(parent)

        Label(top, text="Value").pack()

        self.e = Entry(top)
        self.e.pack(padx=5)

        b = Button(top, text="OK", command=self.ok)
        b.pack(pady=5)

    def ok(self):
        print "value is", self.e.get()

        self.top.destroy()

root = Tk()
Button(root, text="Hello!").pack()
root.update()

d = MyDialog(root)

root.wait_window(d.top)

Answer 1

Change

def init(self, parent):

to

def __init__(self, parent):

See the documentation of object.__init__.