def make_arrow(pad):
 if (pad >= 2):
  return (('-' * (pad - 2)) + '> ')
 elif (pad == 1):
  return '>'
 return ''

def make_arrow ( pad ) : if ( pad >= 2 ) : return ( ( '-' * ( pad - 2 ) ) + '> ' ) elif ( pad == 1 ) : return '>' return ''
generate the leading arrow in front of traceback or debugger .