Python 3中的数据

Question

我的作业有问题，我不能把我的头绕在这上面。我用的是python3。你知道吗

我有个档案(数字.txt)像这样：

1143
007
334
723
888
5234

我想得到这样的输出：

From file numbers.txt were read 6 numbers.
Autonumbers:
  007
  334
  723
  888
Minimal autonumber is 007.
To file cars.txt was saved 4 auto numbers.

到目前为止，我有：

def nmb(fileName):
    numbers = []
    autonumbers = []


    f = open(fileName)
    for line in f: 
        nrs = rida.strip().split(' ')
        numbers.append(nrs[0])
        if len(autonumbers) == 3:
            autonumbers.append(nrs1[0])
            print(autonumbers)



def save(data, autonumbers):

    fileName = "cars.txt"
    f = open(failinimi,"w")
    for numbers in data:
        if len(data) == 3:
            f.write(nimi + "\n")
    f.close

Answer 1

with open("numbers.txt") as f:
   sorted_values = sorted([line for line f if len(line.strip()) == 3],key=int)
#file is now correctly closed ...
min_val = sorted_values[0]

也许？？？你知道吗

老实说，我不知道你想做什么

Answer 2

提供numbers.txt文件后，请尝试：

with open('numbers.txt') as inf:
    numbers = inf.readlines() # this is ugly if the file is big, but....

autonumbers = [number for number in numbers if len(number==3)]
print("From file numbers.txt were read {} numbers.".format(len(numbers)))
print("Autonumbers:")
for number in autonumbers:
    print("{:>7}".format(number))
print("Minimal autonumber is {}".format(min(map(int,autonumbers))))

with open("cars.txt", "a") as outf:
    outf.write("\n".join(autonumbers))

print("To file cars.txt was saved {} auto numbers.".format(len(autonumbers)))

从头开始重写，但这应该完全按照要求工作。不过，这比罪还难看。你为什么要这么做，你真正想做的是什么？这有点臭。你知道吗

Answer 3

一个明显的错误是：

for numbers in data:           # should be for data in numbers:
    if len(data) == 3:         
        f.write(nimi + "\n")   # what is nimi? It isn't defined anywhere...

但是还有其他一些（有些变量被使用但从未定义，有些变量被定义但从未使用，缩进不正常，函数不返回任何东西，文件没有正确关闭）。。。你知道吗