我有一个list和numpy数组的列表。如何找到索引并从索引中提取值？

my_list = [10, 20, 30, 40, 50]
value = 30

index = my_list.index(value)
extracted_value = my_list[index]

print("索引：", index)
print("提取的值：", extracted_value)

import numpy as np

my_array = np.array([10, 20, 30, 40, 50])
value = 30

indices = np.where(my_array == value)
extracted_values = my_array[indices]

print("索引：", indices)
print("提取的值：", extracted_values)