file_name = ["20180601.csv"]

raw_data = []

for f in file_name:
    fin = open(f, "r")

    while True:
        line = fin.readline()[:-1]
        if not line: break

        lines = line.split(',')

        # userID / time / longitude /  latitude / locationID
        user = lines[0]

        # Get minute from times
        times = lines[1]
        minute = times.split(':')[1]

        # Processing location to index
        longitude = lines[2]
        latitude = lines[3]
        location = lines[4]

        raw_data.append((minute, (user, times, longitude, latitude, location)))

check = []
for rd in raw_data:
    if rd[0] not in check:
        print(rd[1])
        check.append(rd[0])