def getKeysA(prefix=''):
 keysA = []
 for row in xrange(4):
  for column in xrange(4):
   key = getKeyA(row, column, prefix)
   keysA.append(key)
 return keysA

def getKeysA ( prefix = '' ) : keysA = [ ] for row in xrange ( 4 ) : for column in xrange ( 4 ) : key = getKeyA ( row , column , prefix ) keysA . append ( key ) return keysA
get the matrix keys .