当我运行以下代码时，为了初始化一个二维矩阵：
X_train_word2vec = np.array(X_train_word2vec)
train_x = np.zeros([X_train_word2vec.shape[0], 150])
for i, sentence in enumerate(X_train_word2vec):
for j, word in enumerate(sentence):
train_x[i,j] = model_word2vec.wv[word]
X_train_word2vec的形状为(12481,)，而train_x的形状为(12481, 150)。我收到此错误：
ValueError: setting an array element with a sequence.
为什么？我想数组的形状有问题，但是我不确定。
更新： 追溯
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ValueError Traceback (most recent call last)
<ipython-input-7-bbd0ab46f676> in <module>()
4 for i, sentence in enumerate(X_train_word2vec):
5 for j, word in enumerate(sentence):
----> 6 train_x[i,j] = model_word2vec.wv[word]
ValueError: setting an array element with a sequence.
更新2：
我发现问题是将数组的分配视为train_x矩阵的元素，因为似乎我们只能分配int或float作为矩阵的元素