rustworkx.PyGraph.edge_index_map# PyGraph.edge_index_map()# 获取边索引映射 返回一个从边索引到带权重边元组的只读映射,格式为:{0: (0, 1, "weight"), 1: (2, 3, 2.3)} Returns: 一项边索引映射 Return type: EdgeIndexMap