如何从numpy数组中删除虚数

import numpy as np

arr = np.array([1+2j, 3+4j, 5+6j])
real_arr = np.real(arr)
print(real_arr)

[1. 3. 5.]

import numpy as np

arr = np.array([1+2j, 3+4j, 5+6j])
imag_arr = np.imag(arr)
print(imag_arr)

[2. 4. 6.]

import numpy as np

arr = np.array([1+2j, 3+4j, 5+6j])
is_real = np.isreal(arr)
print(is_real)

[False False False]

import numpy as np

arr = np.array([1+2j, 3+4j, 5+6j])
real_arr = np.where(np.isreal(arr), arr, np.real(arr))
print(real_arr)

[1. 3. 5.]