How to place a button on the TopLevel window in tkinter python? - python-2.7

Question

Answer as pointed out down for other innocent newbies like me
in python2, we have Tkinter
In python3, we have tkinter.
Notice the difference in casing. Thats the reason, why error was coming up.
I have two screens: window(child) and root(master)
I am trying to place a button on the "window" screen created by the method: command(). I have written this piece of code.
from tkinter import *
root = Tk()
def writeText():
print "hello"
def command():
window=Toplevel(root)
Button(window,text="Button2",command=writeText).grid()
Label(window,text="hello").grid()
button = Button(root, text="New Window", command=command)
button.grid()
root.mainloop()
But this button2 is not appearing on the second screen. Meanwhile, Label is appearing on this screen. And the control is going into the writeText() function.
And when I remove the command argument from the Button of window screen, the button appears.
Can anyone please help me with this?

Answer 1

Here is my suggestion.
From your question you have put from tkinter import * however in your tags you put Python 2.7. This is contradictory because tkinter(all lower case) is used in Python 3.x and Tkinter should instead be used for python 2.x. That said try fixing your import first. If you are in fact using Python 3 then you will need to correct your print statement to include brackets. print("hello")
2nd I would try to follow PEP8 more closely however in this case I don't see anything out of the ordinary that would cause this issue.
Take my below example and let me know if you are still having the same problem.
Python 2.x example:
import Tkinter as tk # Upper case T in Tkinter for Python 2.x
root = tk.Tk()
def write_text():
print "hello"
def command():
window = tk.Toplevel(root)
tk.Button(window,text="Button2",command=write_text).grid()
tk.Label(window,text="hello").grid()
button = tk.Button(root, text="New Window", command=command)
button.grid()
root.mainloop()
Python 3.x example:
import tkinter as tk # all lowercase tkinter for Python 3.x
root = tk.Tk()
def write_text():
print("hello") # Python 3.x requires brackets for print statements.
def command():
window = tk.Toplevel(root)
tk.Button(window,text="Button2",command=write_text).grid()
tk.Label(window,text="hello").grid()
button = tk.Button(root, text="New Window", command=command)
button.grid()
root.mainloop()
If you are still having problems can you tell me if you are using Windows, Linux or Mac?

Answer 2

Have you guys ever tried button with image on Toplevel? It seems it cannot be work with code below on Toplevel(Prompt out windows). Root level is ok.
tp = Toplevel()
tp.geometry("400x400")
btnphotoAdd=PhotoImage(file="32adduser.png")
btnAdd = Button(tp, text="Add User", font="Helvetica 20 bold", image=btnphotoAdd,compound=TOP)
btnAdd.grid(row=10, column=0, sticky=W)