''' Solution to Problem 6.  '''

def leap_year( y ) :
    
    pass


def months( y ) :

    pass


def ytd( m, d, y ) :

    pass


if ( __name__ == '__main__' ) :

    try : 
        l1 = leap_year( 2017 ); l2 = leap_year( 2000 ); l3 = leap_year( 2100 ); l4 = leap_year( 2020 )
        print( l1, l2, l3, l4 )
    except :
        print( 'leap_year() blows up' )
    
    try :
        m1 = months( 2017 ); m2 = months( 2020 )
        print( m1 ); print( m2 )
    except :
        print( 'months() blows up' )

    try : 
        d1 = ytd(  1,  1, 2017 ); d2 = ytd( 12,  7, 2017 ); d3 = ytd(  3,  1, 2020 ); d4 = ytd( 12, 31, 2017 )
        print( d1, d2, d3, d4 )
    except :
        print( 'ytd() blows up' )