`get_adjacency_sparse` broken with scipy 1.13 and empty graphs

[flying-sheep]

Describe the bug

get_adjacency_sparse does sparse.csr_matrix((weights, list(zip(*edges))), shape=(N, N))

Since scipy 1.13, the constructor apparently expects edge tuples of length 2, and with an empty graph, zip(*edges) becomes ().

To reproduce

Call get_adjacency_sparse with scipy 1.13+ installed and you will see

ValueError: mismatching number of index arrays for shape; got 0, expected 2

Version information
1.0.0 from PyPI