Data‘ object has no attribute ‘has_isolated

目前正在学习图神经网络与图论的相关知识，不得不说图论这个领域是真的大，而且有些内容是真的难。以下为记录学习过程中出现的一个问题。

print(f'Number of nodes: {data.num_nodes}')
print(f'Number of edges: {data.num_edges}')
print(f'Average node degree: {data.num_edges / data.num_nodes:.2f}')
print(f'Number of training nodes: {data.train_mask.sum()}')
print(f'Training node label rate: {int(data.train_mask.sum()) / data.num_nodes:.2f}')
print(f'Has isolated nodes: {data.has_isolated_nodes()}')
print(f'Has self-loops: {data.has_self_loops()}')
print(f'Is undirected: {data.is_undirected()}')

pyg的官方代码在运行时出现了如下错误，Data’ object has no attribute 'has_isolated_nodes。通过dir查看data类的成员函数发现，has_isolated_nodes这个函数还有has_self_loops这个函数在类中不存在了，替换为了contains_isolated_nodes()和contains_self_loops()。

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