如何将numpy数组元素从字符串转换为int

Question

I have a list of numbers in string format. I converted that list into numpy array using np.asarray() .

How do I convert the string elements to ints?

Answer 1

如果您有x = np.matrix ，其中每个元素都是 '1.0' （作为str ）并且您想将其转换为int或float ：

x = x.astype(np.float)

Answer 2

import numpy as np
nums_str = ['1','23','345']
nums_str_np = np.asarray(nums_str)
nums_int_np = nums_str_np.astype('int')

nums_int_np - is now np array of integers.