<｜begin▁of▁sentence｜>### Instruction:
As a cardiologist, your patient presents with a series of heart-related issues. In order to analyze the pattern of the symptoms, we need to identify pairs of consecutive nodes, including the pair consisting of the last and first nodes of a cycle graph that represents the patient's heart condition. This analysis will help us to understand the progression of the symptoms and determine the most effective treatment plan. To achieve this, we can use the consecutive_pairs function in the NetworkX package to generate the required pairings.
### Response:
import networkx as nx

# Create a graph
G = nx.cycle_graph(5)

# Function to return consecutive pairs of nodes in the graph
def consecutive_pairs(G, circular=False):
    nodes = list(G)
    if not nodes:
        return []
    if circular:
        return [(nodes[i], nodes[(i + 1) % len(nodes)]) for i in range(len(nodes))]
    else:
        return [(nodes[i], nodes[i + 1]) for i in range(len(nodes) - 1)]

# Example usage
pairs = consecutive_pairs(G, circular=True)
print(pairs)
<|EOT|>
