<｜begin▁of▁sentence｜>### Instruction:
Given the Condensed matter collaborations 2005 graph which you can read from a GML file named cond-mat-2005.gml, can you use the Louvain method in cdlib to perform community detection? And can you compute the fraction of total edge volume that points outside the detected communities?
### Response:
import networkx as nx
from cdlib import algorithms

# Create a graph from a GML file
G = nx.read_gml('path_to_your_gml_file/cond-mat-2005.gml')

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

# Compute the conductance of the detected community structure
conductance_value = communities.conductance()

# Print the conductance value
print('Conductance:', conductance_value)
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