<｜begin▁of▁sentence｜>### Instruction:
Given an adjacency matrix stored in a file named 'adjacency_matrix.txt', where each row represents connections of a node, separated by commas, and lines starting with '%' are comments, how can you create a graph in igraph using this matrix and print out a summary of the graph?
### Response:
import igraph as ig

# Read the adjacency matrix from file
graph = ig.Graph.Read_Adjacency('adjacency_matrix.txt', sep=',', comment_char='%')

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