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Question

我试图使用split在同一行上获取3个整数输入，但是会引发错误

int（）参数必须是字符串，类似字节的对象或数字，而不是 “列表”

这是我的代码

  n,a,k = int(input().split())

Answer 1

请尝试

n,a,k = map(int, input().split())

int只能接收一个字符串。

Answer 2

您可能想像这样使用map：

n,a,k = map(int, input().split())

作为split函数将返回list而不是str。 map将int函数应用于str的每个元素（list）。

Answer 3

由于其他人提供了git status解决方案，因此以下是使用简单列表理解的解决方案：

map

它比n,a,k = [int(i) for i in input().split()]有优势吗？并非如此，但有些人更喜欢这种方法。

Answer 4

OR：

import ast
n,a,k = ast.literal_eval(','.join(input().split()))
print(n,a,k,sep='\n')

示例输出：

Answer 5

即使您输入的字母包含至少3个数字或更多的字母，您也可以使用以下过程方法来完成相同的操作。

如果您还要输入少于3个数字的字符串，则函数将对其进行处理，并为对应的变量返回0。示例包含在最底部。请看看。

import re

def get_inputs(n=3):
    inp = input('Enter a sentence with at least 3 numbers included: ').strip()
    arr =  re.sub(r'[^0-9]+', ' ', inp).strip().split()

    if len(arr) < n:
        for i in range(n):
            try:
                arr[i]
            except IndexError as e:
                arr.append(0)

    n, a, k, *rest = list(map(int, arr))

    return (n, a, k, rest)

# Start
if __name__ == "__main__":
    # Get 3 numbers
    out1 = get_inputs() 
    n, a, k, rest = out1

    print('n =', n)
    print('a =', a)
    print('k =', k)
    print('rest = ', rest)

输出

rishi@Rishidev MINGW64 /c/Rishikesh67/Projects/Working/hygull.github.io/codes/python3.6 (master)
$ python get_numbers.py
Enter a sentence with at least 3 numbers included: Hello, I like 65, 45 and 90 ok.
n = 65
a = 45
k = 90
rest =  []


rishi@Rishidev MINGW64 /c/Rishikesh67/Projects/Working/hygull.github.io/codes/python3.6 (master)
$ python get_numbers.py
Enter a sentence with at least 3 numbers included: 12, 23 and 67 are nice but 34 and 23 also.
n = 12
a = 23
k = 67
rest =  [34, 23]


rishi@Rishidev MINGW64 /c/Rishikesh67/Projects/Working/hygull.github.io/codes/python3.6 (master)
$ python get_numbers.py
Enter a sentence with at least 3 numbers included: 12 34 56
n = 12
a = 34
k = 56
rest =  []


rishi@Rishidev MINGW64 /c/Rishikesh67/Projects/Working/hygull.github.io/codes/python3.6 (master)
$ python get_numbers.py
Enter a sentence with at least 3 numbers included: 45 12    34   21 12 hello 99
n = 45
a = 12
k = 34
rest =  [21, 12, 99]


rishi@Rishidev MINGW64 /c/Rishikesh67/Projects/Working/hygull.github.io/codes/python3.6 (master)
$ python 1.py
Enter a sentence with at least 3 numbers included: Now 67 is best for me.
n = 67
a = 0
k = 0
rest =  []

在Python 3.5的同一行中获取3个输入

5 个答案:

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