tvl-depot/scratch/data_structures_and_algorithms/graph-to-graphviz.py
William Carroll fabf1c9334 Tidy up structure of briefcase
I had a spare fifteen minutes and decided that I should tidy up my
monorepo. The work of tidying up is not finished; this is a small step in the
right direction.

TL;DR
- Created a tools directory
- Created a scratch directory (see README.md for more information)
- Added README.md to third_party
- Renamed delete_dotfile_symlinks -> symlinkManager
- Packaged symlinkManager as an executable symlink-mgr using buildGo
2020-02-12 16:58:29 +00:00

39 lines
884 B
Python

from graphviz import Digraph
from collections import deque
from fixtures import weighted_graph
# There are three ways to model a graph:
# 1. Edge list: [(Vertex, Vertex)]
# 2. Neighbors table: Map(Vertex, [Vertex])
# 3. Adjacency matrix: [[Boolean]]
#
# The following graph is a neighbors table.
# to_graphviz :: Vertex -> Map(Vertex, [(Vertex, Weight)]) -> String
def to_graphviz(start, g):
"""Compiles the graph into GraphViz."""
d = Digraph()
q = deque()
seen = set()
q.append(start)
while q:
v = q.popleft()
if v in seen:
continue
d.node(v, label=v)
for w, x in g[v]:
d.edge(v, x, label=str(w))
q.append(x)
seen.add(v)
return d.source
with open('/tmp/test.gv', 'w') as f:
src = to_graphviz('a', weighted_graph)
f.write(src)
print('/tmp/test.gv created!')