Visualizing_embeddings_in_2D - AttributeError: 'list' object has no attribute 'shape'

[drnic]

When I run the examples/Visualizing_embeddings_in_2D.ipynb notebook, I get an error during tsne.fit_transform(matrix):

    791 def _check_params_vs_input(self, X):
--> 792     if self.perplexity >= X.shape[0]:
    793         raise ValueError("perplexity must be less than n_samples")

AttributeError: 'list' object has no attribute 'shape'

Is this a problem with library versions I have installed? A regression from newer versions?

Sorry if this is a noob python/pandas library mismatch question.