def sanitize(time_string): #序列化得到的无规则数据,将其格式化为 mins.secs 的格式

if '-' in time_string:

splitter = '-'

elif ':' in time_string:

splitter = ':'

else:

return(time_string)

(mins,secs)=time_string.split(splitter)

return(mins+'.'+secs)

def load_from_file(filename): #读取文件的一行(这个文件只有一行,多行咋办)

try:

with open (filename) as f:

data = f.readline()

return (data.strip().split(','))

except IOError as err:

print('File Error: '+str(err))

return (None)

#james = load_from_file('james.txt')

#julie = load_from_file('julie.txt')

#mikey = load_from_file('mikey.txt')

sarah = load_from_file('sarah2.txt')

#列表推导: 先将james 里的每个t格式化为统一的时间,再使用set()剔除重复值,再使用sort进行排序

#使用[0:3]获得列表的前三位

#print(sorted(set([sanitize(t) for t in james]))[0:3])

#print(sorted(set([sanitize(t) for t in julie]))[0:3])

#print(sorted(set([sanitize(t) for t in mikey]))[0:3])

#print(sorted(set([sanitize(t) for t in sarah]))[0:3])

(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]))