如何将字符串列表转换为数值？

Question

如何将字符串列表(每个字符串表示一个数字,即[‘1’, ‘2’, ‘3’])转换为数值.

Answer 1

map(int,["1","2","3"])

给

[1, 2, 3]

Answer 2

使用int()和列表推导:

>>> i = ['1', '2', '3']
>>> [int(k) for k in i]
[1, 2, 3]

Answer 3

只要字符串的形式为'1'而不是'one',那么您可以使用int()函数.

一些示例代码将是

strList = ['1','2','3']
numList = [int(x) for x in strList]

或者没有列表理解

strList = ['1','2','3']
numList = []
for x in strList:
    numList.append(int(x))

两个示例都遍历字符串列表并将int()函数应用于值.