from tkFileDialog import askopenfilename
from tkColorChooser import askcolor
from tkMessageBox  import askquestion, showerror
from tkSimpleDialog import askfloat

demos = {
    'Open': askopenfilename,
    'Color': askcolor,
    'Query': lambda: askquestion('Warning','you typed "rm *"\nCinfirm?'),
    'Error': lambda: showerror('Error!',"He's dead"),
    'Input' : lambda:askfloat('Entry','Enter credit card number')
}