如何从张量中随机选取总值的5%？

import numpy as np

# 假设原始张量为tensor
tensor = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])

# 计算张量的总值
total = tensor.sum()

# 计算总值的5%
percentage = total * 0.05

# 生成与原始张量形状相同的随机数张量
random_tensor = np.random.rand(*tensor.shape)

# 将随机数张量与5%的值相乘
random_percentage = random_tensor * percentage

# 从张量中随机选取总值的5%
result = tensor * random_percentage

print(result)