''' Purpose: help introduce tester statement if ( __name__ == '__main__' )
'''

def f() :
    ''' Purpose: be a function
    '''

    return 1112

if ( __name__ == '__main__' ):
    print(__name__) # __name__ (2 underscores on either side)

# If we're in the program we're running and we print out __name__
# it will print out __main__
# right now, the program we're running is not one being imported
# so we're running it so the variable __name__ is set to __main__