<｜begin▁of▁sentence｜>### Instruction:
{'description': "Given a graph with the edge set [('A', 'B'), ('B', 'C'), ('C', 'D'), ('D', 'A')], how can one write this graph to a Graphviz dot file using NetworkX?", 'data': 'The graph is undirected and consists of four nodes connected in a cycle: A-B-C-D-A.', 'problem_solved': "The code provided writes the graph's structure in Graphviz dot format to a file named 'my_graph.dot', allowing it to be visualized or further processed using Graphviz tools."}
### Response:
import networkx as nx

# Create a graph
G = nx.Graph()
G.add_edges_from([('A', 'B'), ('B', 'C'), ('C', 'D'), ('D', 'A')])

# Write to a dot file
nx.write_dot(G, 'my_graph.dot')
print('Graph has been written to my_graph.dot')
<|EOT|>
