定义一个类Athlete

from sanitize import sanitize       #格式化数据
class Athlete:        #创建一个类
    def __init__ (self, a_name, a_dob=None, a_times=[]):        #初始化参数
        self.name = a_name
        self.dob = a_dob
        self.times = a_times
    def top3(self):        #定义一个top3方法
        return (sorted(set([sanitize(t) for t in self.times]))[0:3])

#调用get_coach_data函数返回一个Athlete类的对象
def get_coach_data(filename):
        try:
            with open(filename) as f:
                data = f.readline()
            templ = data.strip().split(',')
            return Athlete(templ.pop(0), templ.pop(0), templ)
        except IOError as ioerr:
            print('file error:' + str(ioerr))
            return(None)
#输出
james = get_coach_data('james2.txt')
print(james.name + "'s fastest times are: " + str(james.top3()))

julie2 = get_coach_data( 'julie2.txt' )
print(julie2.name + "'s fastest times are: " + str(julie2.top3()))

sarah2 = get_coach_data( 'sarah2.txt' )
print(sarah2.name + "'s fastest times are: " + str(sarah2.top3()))

mikey2 = get_coach_data( 'mikey2.txt' )
print(mikey2.name + "'s fastest times are: " + str(mikey2.top3()))