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Python中列表元素转为数字的方法分析

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Jun 16, 2016 am 08:47 AM

python number

本文实例讲述了Python中列表元素转为数字的方法。分享给大家供大家参考，具体如下：

有一个数字字符的列表：

1	`numbers = ['1',` `'5',` `'10',` `'8']`

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想要把每个元素转换为数字：

1	`numbers = [1, 5, 10, 8]`

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用一个循环来解决：

new_numbers = [];
for n in numbers:
  new_numbers.append(int(n));
numbers = new_numbers;

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有没有更简单的语句可以做到呢？

1	`numbers = [ int(x)` `for` `x in numbers ]`

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2. Python2.x,可以使用map函数

1	`numbers = map(int, numbers)`

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如果是3.x,map返回的是map对象，当然也可以转换为List:

1	`numbers = list(map(int, numbers))`

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3.还有一种比较复杂点：

1	`for` `i, v in enumerate(numbers): numbers[i] = int(v)`

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更多关于Python相关内容感兴趣的读者可查看本站专题：《Python图片操作技巧总结》、《Python数据结构与算法教程》、《Python Socket编程技巧总结》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》、《Python入门与进阶经典教程》及《Python文件与目录操作技巧汇总》

希望本文所述对大家Python程序设计有所帮助。

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