# -*- coding: utf-8 -*-
# Copyright (c) 2019, Silvio Peroni <essepuntato@gmail.com>
#
# Permission to use, copy, modify, and/or distribute this software for any purpose
# with or without fee is hereby granted, provided that the above copyright notice
# and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,
# OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
# DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
# SOFTWARE.

from networkx import MultiGraph

# create a new graph
my_graph = MultiGraph()

# create four nodes
my_graph.add_node(1)
my_graph.add_node(2)
my_graph.add_node(3)
my_graph.add_node(4)

# create seven edges
my_graph.add_edge(1, 2)
my_graph.add_edge(1, 2)
my_graph.add_edge(1, 3)
my_graph.add_edge(1, 4)
my_graph.add_edge(1, 4)
my_graph.add_edge(2, 3)
my_graph.add_edge(3, 4)