Tkinter __call__

[John McMonagle]

Gigs_ wrote:
> from Tkinter import *
> from tkFileDialog   import askopenfilename
> from tkColorChooser import askcolor
> from tkMessageBox   import askquestion, showerror
> from tkSimpleDialog import askfloat
> 
> demos = {
>      'Open':  askopenfilename,
>      'Color': askcolor,
>      'Query': lambda: askquestion('Warning', 'You typed 		 
> "..."\nConfirm?'),
>      'Error': lambda: showerror('Error!', "He's dead, Jim"),
>      'Input': lambda: askfloat('Entry', 'Enter credit card number')
> }
> 
> 
> class Demo(Frame):
>      def __init__(self, parent=None):
>          Frame.__init__(self, parent)
>          self.pack()
>          Label(self, text="Basic demos").pack()
>          for (key, value) in demos.items():
>              func = (lambda key=key: self.printit(key))
>              Button(self, text=key, command=func).pack(side=TOP, fill=BOTH)
>      def printit(self, name):
>          print name, 'returns =>', demos[name]()
> 
> 
> I have tried but cant get it to work properly.
> I want to instead printit method to put __call__ and call it like that
> Can someone help me, please?

Add the following lines to the end of your script and all should work as 
expected:

root = Tk()
app = Demo(root)
root.mainloop()