#NEWLINE# def nested_enumerate_usecase( ) : #NEWLINE# #INDENT# res = 0.0 #NEWLINE# for ( i , ( j , k ) ) in enumerate ( enumerate ( ( ( 1.5 , 2.0 ) , ( 99.3 , 3.4 ) , ( 1.8 , 2.5 ) ) ) ) : #NEWLINE# #INDENT# for l in k : #NEWLINE# #INDENT# res += ( ( i * j ) * l ) #NEWLINE# #UNINDENT# res = ( res * 2 ) #NEWLINE# #UNINDENT# return res