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def modifyConstant() :
        global CONSTANT
        print CONSTANT
        CONSTANT += 1
        return
if __name__ == '__main__' :
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        print CONSTANT
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gl_1 = 'hello'
gl_2 = 'world'
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#a.py
import gl
def hello_world()
    print gl.gl_1, gl.gl_2
#b.py
import gl
def fun1()
    gl.gl_1 = 'Hello'
    gl.gl_2 = 'World'
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from tkinter import *
root = Tk()
root.title("python3.0²éѯ")
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Label(root).grid(ipady=5)
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class Frame11:
    def __init__(self, root):   # ......
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