####################################################
# 4 demo classes in independent top-level windows;
# not processes: when one is quit all others go away
# because all windows run in the same process here
####################################################

from Tkinter import *
demoModules = ['demoDlg', 'demoRadio', 'demoCheck', 'demoScale']

demoObjects = []
for demo in demoModules:
    module = __import__(demo)             # import by name string
    window = Toplevel()                   # make a new window
    demo   = module.Demo(window)          # parent is the new window
    demoObjects.append(demo)

def allstates():
    for obj in demoObjects: 
        if hasattr(obj, 'report'):
            print obj.__module__, 
            obj.report()

Label(text='Multiple Toplevel window demo', bg='white').pack()
Button(text='States', command=allstates).pack(fill=X)
mainloop()