PlayStream/test_sources.py

from Tkinter import *

class App:

    def __init__(self, master):

        self.frame = Frame(master,width=1015,height=550)
        self.frame.pack()

        self.b_red = Button(self.frame, text="Back", fg="red", command=self.frame.quit, height = 30, width = 148)
        self.b_red.place(x=110,y=500)

        self.b_green = Button(self.frame, text="Select", fg="green",command=self.say_hi,height = 30, width = 148)
        self.b_green.place(x=370,y=500)

    def say_hi(self):
        print "hi there, everyone!"

root = Tk()
root.geometry("1015x550")

app = App(root)

root.mainloop()