第176页 第六章 定制数据对象

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)

def get_coach_data(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)

sarah = get_coach_data('sarah2.txt')
(sarah_name, sarah_dob) = sarah.pop(0), sarah.pop(0)
print(sarah_name + "'s fastest times are: " + \
      str(sorted(set([sanitize(t) for t in sarah]))[0:3]))

vs. mine:
#coding=utf-8

def list_score(f):
	try:
		with open(f, 'r') as source:
			scores = []
			data = source.readline()
			init_scores = data.strip().split(',')
			for score in init_scores:
				if '-' in score:
					scores.append(score.replace('-','.'))
				elif ':' in score:
					scores.append(score.replace(':','.'))
				else:
					scores.append(score)
			return scores
	except IOError as err:
		print str(err)
		return None
james = list_score('james.txt')
julie = list_score('julie.txt')
mikey = list_score('mikey.txt')
sarah = list_score('sarah.txt')

uniq_james = [x for x in james if james.count(x) == 1]

print sorted(james)
print sorted(uniq_james[0:3])