split_taking.py

import datetime
 
done = False
count = 0
times = []
splits = []
while not done:
    split = input('split: ')
    if split == '':
        done = True
        continue
    try:
        dt = datetime.datetime.strptime(split, '%M:%S.%f')
    except:
        print('Try again!')
        continue
    split = 60 * dt.minute + (dt.second + (dt.microsecond / 1000000.0))
    times.append(split)
    if count != 0:
        split = split - times[count - 1]
    splits.append(round(split, 2))
    count += 1
 
splits.append(round(sum(splits), 2))
print(str(splits).strip('[]').replace(' ', '') + ',')