<｜begin▁of▁sentence｜>### Instruction:
Given a NetworkX graph where edges have been added or removed after getting an EdgeView (e.g., g.edges), how can you identify if the EdgeView has become stale (i.e., no longer reflects the current state of the graph's edges)?
### Response:
import networkx as nx

# Create a NetworkX graph
g = nx.Graph()
# Add some edges
g.add_edges_from([(0, 1), (1, 2), (2, 3)])
# Get the EdgeView of the graph
edges = g.edges
# Edges are now stale after modifying the graph
# Example: Adding a new edge
g.add_edge(3, 4)
# Access the stale EdgeView
g._edges = edges
print('Stale EdgeView:', g._edges)
# Refresh EdgeView
edges = g.edges
print('Refreshed EdgeView:', edges)
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