<｜begin▁of▁sentence｜>### Instruction:
Given the Political blogs Graph which you can read from a gml file named polblogs.gml, can you use the Louvain algorithm in cdlib to perform community detection? And can you compute the average transitivity of nodes within the detected communities? Notes: You need to print the average transitivity of nodes within the detected communities.
### Response:
import networkx as nx
from cdlib import algorithms, evaluation

# Read the political blogs Graph
G = nx.read_gml('polblogs.gml')

# Perform community detection using Louvain algorithm
communities = algorithms.louvain(G)

# Compute the average transitivity of the detected communities
avg_transitivity_score = evaluation.avg_transitivity(G, communities)

# Output the result
print(avg_transitivity_score.score)
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