<｜begin▁of▁sentence｜>### Instruction:
As a Web Content Manager, you may need to verify that the content on your website accurately represents a graph. Suppose the graph has the following edge set: [(0, 1), (1, 2), (2, 0)]. Your task is to check if the graph's edge sequence contains all edges exactly once and if they are in order of their edge IDs. This can help ensure that the content related to the graph on your website is both meaningful and correct. If you need a tool for graph analytics, you can explore the NetworkX library.
### Response:
import igraph as ig

# Create a graph
graph = ig.Graph(edges=[(0, 1), (1, 2), (2, 0)])

# Get the edge sequence
edges = graph.es

# Check if edge sequence contains all edges exactly once, in order
is_all_once_in_order = edges.is_all()

# Print the result
print('Contains all edges exactly once, in order:', is_all_once_in_order)
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