<｜begin▁of▁sentence｜>### Instruction:
Given the network science coauthorship graph that can be read from a GML file named netscience.gml, can you write the community structure obtained from the Louvain algorithm to a CSV file and then read it back into a NodeClustering object?
### Response:
import networkx as nx
from cdlib import algorithms, readwrite

# Create a network graph instance
g = nx.read_gml('netscience.gml')

# Detect communities in the graph with the Louvain algorithm
coms = algorithms.louvain(g)

# Write the community structure to a CSV file
readwrite.write_community_csv(coms, 'communities.csv', ',')

# Read the community structure from a CSV file
restored_coms = readwrite.read_community_csv('communities.csv', ',', str)
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