将字符串转换为包含负数的整数的列表

Question

I want to convert this string

-1, -2, 3, 4, 5

into a list with those values.

[-1, -2, 3, 4, 5]

When the values are positive, I have many options but I can't seem to get it once there is a "-" character involved.

If possible, I'd like not to use regex.

Answer 1

string = "-1, -2, 3, 4, 5"
print [int(el) for el in string.split(',')]

output:

[-1, -2, 3, 4, 5]

Answer 2

您可以直接拆分它，然后使用map函数将它们转换为int，如下所示：

arr = map(int,s.strip().split(','))

Answer 3

Simple:

s = '-1, -2, 3, 4, 5'
lst = [int(x.strip()) for x in s.split(',')]

Answer 4

For the sake of completness of this problem, here is a solution using ast.literal_eval

>>> import ast
>>> list(ast.literal_eval("-1, -2, 3, 4, 5"))
[-1, -2, 3, 4, 5]