如何从numpy数组中删除项？

import numpy as np

arr = np.array([1, 2, 3, 4, 5])
new_arr = np.delete(arr, 2)  # 删除索引为2的元素
print(new_arr)

[1 2 4 5]

import numpy as np

arr = np.array([1, 2, 3, 4, 5])
new_arr = np.delete(arr, np.where(arr > 3))  # 删除大于3的元素
print(new_arr)

[1 2 3]