 def digit_sum ( n ) : <EOL> b = [ ] <EOL> n = str ( n ) <EOL> for a in n : <EOL> a = int ( a ) <EOL> b . append ( a ) 
 return sum ( b ) 
 def digit_sum ( n ) : <EOL> b = [ ] <EOL> n = str ( n ) <EOL> for a in n : <EOL> a = int ( a ) <EOL> b . append ( a ) <EOL> return sum ( b ) <EOL> print sum ( b ) </s>
