def dummy():
    for i in range(20):
        num = i * 2.0
        #print num, ' the second col ', num**2
        print '%d. %40s  %-30d' %(123.4566543342, ' the second col', num**2)


def strTest(str):
    str = 'newstr'


x = 'test'
print x
strTest(x)
print x

# File: hello1.py

from Tkinter import *

root = Tk()

w = Label(root, text="Hello, world!")
w.pack()

root.mainloop()