def getMatrixKey(row, column, prefix=''):
 return (((prefix + 'm') + str((row + 1))) + str((column + 1)))

def getMatrixKey ( row , column , prefix = '' ) : return ( ( ( prefix + 'm' ) + str ( ( row + 1 ) ) ) + str ( ( column + 1 ) ) )
get the key string from row & column .