<｜begin▁of▁sentence｜>### Instruction:
Given a random graph with 30 vertices and a probability of 0.1 for edge creation, can you use the assortativity_degree method in igraph to calculate and output the assortativity based on vertex degrees?
### Response:
import igraph as ig

# Generate a random graph
n = 30  # Number of vertices
p = 0.1  # Probability of edge creation
g = ig.Graph.Erdos_Renyi(n, p)

# Calculate assortativity based on vertex degrees
degree_assortativity = g.assortativity_degree(directed=False)

# Output the assortativity coefficient
print('Assortativity based on vertex degrees:', degree_assortativity)
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