def printfile(aFileName):
 print ('\nMission file: %s' % aFileName)
 with open(aFileName) as f:
  for line in f:
   print (' %s' % line.strip())

def printfile ( aFileName ) : print ( '\nMission file: %s' % aFileName ) with open ( aFileName ) as f : for line in f : print ( ' %s' % line . strip ( ) )
print a mission file to demonstrate "round trip" .