kwargs question

[deanhystad]

I think this is a bad idea:

class ClassName(Tk.Frame):
    def __init__( self, parent, **options ):
        Tk.Frame.__init__( self, parent, **options ) 
        options = {'bg': 'tan'}
        self.parent=parent
         
        self.canvas=Canvas(self,width=300,height=300,**options)
        self.canvas.grid(row=0,column=0)

The appropriate way to do this is.

import tkinter as tk

class ClassName(tk.Frame):
    def __init__(self, parent, canvas_bg=None, **kwargs):
        super().__init__(self, parent, **kwargs) 
        self.canvas=tk.Canvas(self, width=300, height=300, bg=canvas_bg)
        self.canvas.grid(row=0,column=0)

thing = ClassName(self, canvas_bg="tan", bg="yellow")

Even if you end up with dozens of keyword arguments it is far better to expose them in the argument list than to hide them in and options dictionary.