python - 获取用户输入来读取文件中的那么多行

Question

我正在尝试接受用户输入以将那么多行读入文本文件。到目前为止我已经做到了，但收到此错误:在 write_dogs line=f.next().strip() AttributeError: '_io.TextIOWrapper' 对象没有属性 'next'

这是我现在的代码。

def write_dogs():
    total_cards = int(input("How many cards do you wish to play with? "))
    if total_cards %2 != 0:
        print("Please enter an even number")
        main_menu()
    elif total_cards > 30 or total_cards < 4:
        print("Please enter a number less that 30 and more than 4")
        main_menu()
    else:
        N = total_cards
        with open("dogs.txt") as f:
            with open("dogswrite.txt", "w") as f1:
                for i in range(N):
                    line=f.next().strip()
                    f1.write(line)

如有任何帮助，我们将不胜感激

工作代码如下

def write_dogs():
    total_cards = int(input("How many cards do you wish to play with? "))
    if total_cards %2 != 0:
        print("Please enter an even number")
        main_menu()
    elif total_cards > 30 or total_cards < 4:
        print("Please enter a number less that 30 and more than 4")
        main_menu()
    else:
        N = total_cards
        with open("dogs.txt") as f:#opens needed file
            with open("dogswrite.txt", "w") as f1:#my own file to later create a class
                for i in range(N):
                    line=next(f).strip()#lists the input number of results each on a new line
                    line = line + "\n"
                    f1.write(line)

Answer 1

.next() 在这里不起作用，因为 f 不是列表，而是文件。您应该使用 f.readline()

此外，将 for 循环更改为:

for i in range(N):
    line=next(f).strip() + ', '
    f1.write(line)

编辑:没有注意到索引行，还根据您的评论添加了逗号