<｜begin▁of▁sentence｜>### Instruction:
Given a graph representing a karate club network, can you compute the eigenvalues of the Bethe Hessian matrix using a regularizer parameter r equal to the square root of the number of edges in the graph?
### Response:
import networkx as nx
import numpy as np
from networkx.utils import bethe_hessian_spectrum

# Create a graph
G = nx.karate_club_graph()

# Set the regularizer parameter
r = np.sqrt(G.number_of_edges())

# Compute the Bethe Hessian spectrum
spectrum = bethe_hessian_spectrum(G, r)

# Print the eigenvalues
print(spectrum)
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