cycle

with open('james.txt') as jaf:
    data = jaf.readline()
    james = data.strip().split(',')
    # james.sort()
with open('julie.txt') as jul:
    data = jul.readline()
    julie = data.strip().split(',')
    # julie.sort()
with open('sarah.txt') as sar:
    data = sar.readline()
    sarahs=data.strip().split(',')
    # sarahs.sort()
with open('mikey.txt') as mik:
    data = mik.readline()
    mikeys=data.strip().split(',')


=====　　　　--等于

def getfile(filename):
    try:
        with open(filename) as f:
            data = f.readline()
        return (data.strip().split(','))
    except IOError as ioerr:
        print ('File error:' + str(ioerr))
        return (None)
james = getfile('james.txt')
julie = getfile('julie.txt')
sarahs = getfile('sarah.txt')
mikeys = getfile('mikey.txt')