<｜begin▁of▁sentence｜>### Instruction:
As an expert in networkx, you may want to consider a practical scenario where a high-energy theory collaboration graph, represented as a GML file named hep-th.gml, needs community detection analysis. In this scenario, the walktrap function in the CDLIB library could be used for community detection. After running this function, the next step would be to output the detected communities from the analysis.
### Response:
import networkx as nx
from cdlib import algorithms

# Load the high-energy theory collaborations graph
G = nx.read_gml('hep-th.gml')

# Apply the walktrap community detection algorithm
communities = algorithms.walktrap(G)

# Output the detected communities
print(communities)
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