<｜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 'sbm_dl_nested' function in cdlib to perform community detection using a nested non-overlapping stochastic block model by minimizing its description length? After detecting communities, can you print out the communities detected by the algorithm?
### Response:
import networkx as nx
from cdlib import algorithms

# Load an astrophysics collaborations graph from a GML file
G = nx.read_gml('astro-ph.gml')

# Use the SBM_DL algorithm for detecting communities
communities = algorithms.sbm_dl_nested(G)

# Output the detected communities
for community in communities.communities:
    print(community)
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