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"""
=============
Write Dotfile
=============
Write a dot file from a networkx graph for further processing with graphviz.
You need to have either pygraphviz or pydot for this example.
See https://networkx.github.io/documentation/latest/reference/drawing.html
"""
import networkx as nx
# This example needs Graphviz and either PyGraphviz or pydot.
# from networkx.drawing.nx_pydot import write_dot
from networkx.drawing.nx_agraph import write_dot
G = nx.grid_2d_graph(5, 5) # 5x5 grid
write_dot(G, "grid.dot")
print("Now run: neato -Tps grid.dot >grid.ps")