ValueError：int（）以10为底的无效文字：“-” m [i] [i] = int（d [i]） [英] ValueError: invalid literal for int() with base 10: '-' m[i][i] = int(d[i])

问题描述

我正在处理代码，以找到最大的求值（忽略优先级），例如

Im working on the code the finding the maximum evaluation (ignoring precedence) such as

2

5+ 3 * 2

-1 + -4 * -3

-1 + -4 * -3

输出

16

40000000000

40000000000

我有以下代码返回以下错误：

I have the following code which returns the following error:

ValueError: invalid literal for int() with base 10: '-' m[i][i] = int(d[i]) File

注意：我浏览了其他类似错误的问题，但这与每个问题都不相同。
Im使用Python 3并完成工作。

Note: I have looked through the other questions with a similar error, but this is different from each of them. Im using Python 3and it docent work.

def get_maximum_value(expression):
    expression="".join(expression.split())
    op = expression[1:len(expression):2]
    d = expression[0:len(expression)+1:2]
    n = len(d)
    m = [[0 for i in range(n)] for j in range(n)]
    M = [[0 for i in range(n)] for j in range(n)]
    for i in range(n):
        m[i][i] = int(d[i])
        M[i][i] = int(d[i])   
    for s in range(1,n):
        for i in range(n-s):
            j = i + s
            m[i][j], M[i][j] = MaxValue(i,j,op,m,M)
        return M[0][n-1]


num=int(input())
for i in range(num):
   expression=input()
   print (get_maximum_value(expression))

但是，它显示 ValueError：int（）以10为底的无效文字：'-'m [i] [i] = int（d [i]）。

我试图将int更改为float，但仍然无法正常工作。

I tried to change the int to float but it still doesnt work.

推荐答案

有一个类似的问题此处，我通过 SethMMorton 使用函数强制将字符串类型的浮点数直接转换为int很有用。试试看。

There is a similar question asked here and I found the answer by SethMMorton useful by using a function to force conversation of float numbers in string type directly to int. Give it a try.

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