picd = {} numd = {} fi = open("dir_100.txt",'r') for stulists in fi: stulists = stulists.replace('\n','').、____ if stulists [0] != '' : lkey,lvalue = ___,eval(stulists [0]) lval = [] for v in lvalue: if v != ___: lval.append(v) if lval: lv= ','. ___ print("{}:{}".format( lkey,lv)) picd[lkey] = ___ fi.close() idd = {} for key in picd: ids = picd[key]. ___ for num in ids: idd[num] = idd. ___ +1 s = 0 for key in idd: s += int(___) count = ___ print("实际参加测试的人数是：",count) print("人均被测次数是：{:.1f}".format(s/count))

以下是代码的完整版：

picd = {}
numd = {}
fi = open("dir_100.txt",'r')
for stulists in fi:
    stulists = stulists.replace('\n','')
    if stulists [0] != '' :
        lkey,lvalue = stulists.split('_')
        lvalue = eval(lvalue)
        lval = []
        for v in lvalue:
            if v != '0':
                lval.append(v)
        if lval:
            lv= ','.join(lval)
            print("{}:{}".format( lkey,lv))
            picd[lkey] = lval
fi.close()
idd = {}
for key in picd:
    ids = picd[key]
    for num in ids:
        idd[num] = idd.get(num,0) + 1
s = 0
for key in idd:
    s += int(idd[key])
count = len(idd)
print("实际参加测试的人数是：",count)
print("人均被测次数是：{:.1f}".format(s/count))

运行结果应该和前面的一样。