I have a Tkinter canvas populated with text and canvas windows, or widgets, created using the
First, lets get the terminology straight: you aren't creating widgets, you're creating canvas items. There's a big difference between a Tkinter text widget and a canvas text item.
In the following example, the text item will show the string "this is the new text":
import Tkinter as tk class Example(tk.Frame): def __init__(self, *args, **kwargs): tk.Frame.__init__(self, *args, **kwargs) canvas = tk.Canvas(self, width=800, height=500) canvas.pack(side="top", fill="both", expand=True) canvas_id = canvas.create_text(10, 10, anchor="nw") canvas.itemconfig(canvas_id, text="this is the text") canvas.insert(canvas_id, 12, "new ") if __name__ == "__main__": root = tk.Tk() Example(root).pack(side="top", fill="both", expand=True) root.mainloop()