<p>看不到所需输出的原因是,即使有嵌套列表<code>expected</code>,也只在嵌套列表中进行迭代。首先需要遍历外部列表,然后在内部遍历嵌套列表:</p>
<pre><code>import numpy as np
expected = [ [[45.0, 10.0, 10.0], [110.0, 10.0, 8.0], [60.0, 10.0, 5.0], [170.0, 10.0, 4.0]], [[-80.0, 20.0, 10.0], [97.0, 15.0, 12.0], [5.0, 20.0, 8.0], [93.0, 10.0, 8.0], [12.0, 5.0, 15.0], [-88.0, 10.0, 10.0], [176.0, 10.0, 8.0]] ]
horizontal_expected = []
for i in range(len(expected)):
tmp_list = []
for j in range(len(expected[i])):
horizontal_exp = expected[i][i][1]*expected[i][i][2]*np.cos(np.deg2rad(expected[i][i][0]))
tmp_list.append(horizontal_exp)
horizontal_expected.append(tmp_list)
print(horizontal_expected)
</code></pre>
<p>它的输出是一个列表列表:</p>
<pre><code>>>> print(horizontal_expected)
[[70.71067811865476, 70.71067811865476, 70.71067811865476, 70.71067811865476], [-21.936481812926527, -21.936481812926527, -21.936481812926527, -21.936481812926527, -21.936481812926527, -21.936481812926527, -21.936481812926527]]
</code></pre>
<p>如您所见,它为输入中的每个列表保存一个值,但该值是相同的。这是因为你的方程是怎么建立的。你知道吗</p>
<p>您希望根据循环的级别更新索引:
<code>horizontal_exp = expected[i][j][1]*expected[i][j][2]*np.cos(np.deg2rad(expected[i][j][0]))</code></p>
<p>完整的工作代码如下所示:</p>
<pre><code>import numpy as np
expected = [ [[45.0, 10.0, 10.0], [110.0, 10.0, 8.0], [60.0, 10.0, 5.0], [170.0, 10.0, 4.0]], [[-80.0, 20.0, 10.0], [97.0, 15.0, 12.0], [5.0, 20.0, 8.0], [93.0, 10.0, 8.0], [12.0, 5.0, 15.0], [-88.0, 10.0, 10.0], [176.0, 10.0, 8.0]] ]
horizontal_expected = []
for i in range(len(expected)):
tmp_list = []
for j in range(len(expected[i])):
horizontal_exp = expected[i][j][1]*expected[i][j][2]*np.cos(np.deg2rad(expected[i][j][0]))
tmp_list.append(horizontal_exp)
horizontal_expected.append(tmp_list)
print(horizontal_expected)
</code></pre>
<p>以及输出:</p>
<pre><code>>>> print(horizontal_expected)
[[70.71067811865476, -27.361611466053496, 25.000000000000007, -39.39231012048832], [34.72963553338608, -21.936481812926527, 159.39115169467928, -4.186876499435507, 73.36107005503543, 3.489949670250108, -79.80512402078594]]
</code></pre>