<｜begin▁of▁sentence｜>### Instruction:
Given an .ncol file named 'network.ncol', how can you use igraph to read the file and create an undirected graph?
### Response:
import igraph as ig

# Read an .ncol file and create a graph
file_path = 'network.ncol'
g = ig.Graph.Read_Ncol(file_path, directed=False)

# Print the summary of the graph
print(g.summary())
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