""" Illustration of logic short circuiting

>>> import shortcircuit
>>> shortcircuit.both()
 no
 yes
True
>>> shortcircuit.first()
 yes
True
>>> 

"""


def yes():
    print " yes"
    return True


def no():
    print " no"
    return False


def both():
    print no() or yes()

def first():
    print yes() or no()