file cycle

# Author:Alex
# Date:2017.06.07
# Version:3.6.0
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(',')

def sanitize(time_string):
    if '-' in time_string:
        splitter = '-'
    elif ':' in time_string:
        splitter = ':'
    else:
        return (time_string)
    (mins,secs) = time_string.split(splitter)
    return (mins + '.' + secs)

clean_james = []
clean_julie = []
clean_mikeys = []
clean_sarah = []

for each_t in james:
    clean_james.append(sanitize(each_t))
for each_t in julie:
    clean_julie.append(sanitize(each_t))
for each_t in mikeys:
    clean_mikeys.append(sanitize(each_t))
for each_t in sarahs:
    clean_sarah.append(sanitize(each_t))

print (sorted(clean_james))
print (sorted(clean_julie))
print (sorted(clean_mikeys))
print (sorted(clean_sarah))