Python 数据类型转换操作

# python 3.5

a = ['1', '2', '3']
b = list(map(int, a)) # 转为整型
c = list(map(float, a)) # 转为浮点型

# python 3.5, numpy 1.12

# 数据输入格式为数字以‘,’分隔

import numpy as np

line = '1,2,3,4,5'
x = np.fromstring(line, dtype=int, sep=',')