<｜begin▁of▁sentence｜>### Instruction:
Given the Astrophysics collaborations Graph which you can read from a gml file named astro-ph.gml, can you use the Louvain algorithm to perform community detection? And can you compute the Surprise quality metric for the detected communities?
### Response:
import networkx as nx
from cdlib import algorithms, evaluation

# Read the astrophysics collaborations graph
G = nx.read_gml('astro-ph.gml')

# Apply Louvain algorithm for community detection
communities = algorithms.louvain(G)

# Compute the Surprise quality metric
surprise_metric = evaluation.surprise(G, communities)

print(surprise_metric)
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