<s> """<STR_LIT>""" <EOL> class euclidean ( object ) : <EOL> """<STR_LIT>""" <EOL> def __init__ ( self ) : <EOL> """<STR_LIT>""" <EOL> self . distances = { } <EOL> def optimize ( self , graph ) : <EOL> """<STR_LIT>""" <EOL> for start in graph . nodes ( ) : <EOL> for end in graph . nodes ( ) : <EOL> for each in graph . node_attributes ( start ) : <EOL> if ( each [ <NUM_LIT:0> ] == '<STR_LIT>' ) : <EOL> start_attr = each [ <NUM_LIT:1> ] <EOL> break <EOL> for each in graph . node_attributes ( end ) : <EOL> if ( each [ <NUM_LIT:0> ] == '<STR_LIT>' ) : <EOL> end_attr = each [ <NUM_LIT:1> ] <EOL> break <EOL> dist = <NUM_LIT:0> <EOL> for i in range ( len ( start_attr ) ) : <EOL> dist = dist + ( float ( start_attr [ i ] ) - float ( end_attr [ i ] ) ) ** <NUM_LIT:2> <EOL> self . distances [ ( start , end ) ] = dist <EOL> def __call__ ( self , start , end ) : <EOL> """<STR_LIT>""" <EOL> assert len ( list ( self . distances . keys ( ) ) ) > <NUM_LIT:0> , "<STR_LIT>" <EOL> return self . distances [ ( start , end ) ] </s>
