Hey sorry to bother with this, but I seems something happened where it seems that

hamilton

can no longer use

graphviz

to create the dag.

graphviz.backend.execute.ExecutableNotFound: failed to execute WindowsPath('dot'), make sure the Graphviz executables are on your systems' PATH

Graphviz is added to path and I am able to do this example from the docs. I tried: • creating a fresh venv • reinstalling sf-hamilton[visualization] Any ideas?

I think this is a system issue. I have encountered this once before, and restarting the computer fixed it 🤷 otherwise in that new environment, you could open up a python interpreter and validate that graphviz works running some of that python you linked to?

Yeah it wrote the

.gv

file but not the

.svg

and throws the same error

can you validate the .svg on a simple DAG to rule out it being something with your particular Hamilton DAG?

It being, doing the

graphviz

hello world with the

graphviz

lib

wait so

.svg

fails independent of Hamilton?

yes sir

hmm — not sure I can help you there — have you tried reinstalling graphviz?

restarting seemed to fix, ty

Had the same problem. You need to install the package

python-graphviz

, instead.

dr.visualize_execution()

keeps finding this error from Jupyter. Is this still a

graphviz

issue outside of

hamilton

scope?

File c:\codebase\volume-reporting\vol-rep-venv\lib\site-packages\graphviz\jupyter_integration.py:98, in <dictcomp>(.0)
     96 include = set(include) if include is not None else {self._jupyter_mimetype}
     97 include -= set(exclude or [])
---> 98 return {mimetype: getattr(self, method_name)()
     99         for mimetype, method_name in MIME_TYPES.items()
    100         if mimetype in include}

File c:\codebase\volume-reporting\vol-rep-venv\lib\site-packages\graphviz\jupyter_integration.py:112, in JupyterIntegration._repr_image_svg_xml(self)
    110 def _repr_image_svg_xml(self) -> str:
...
    102 stdout, stderr = popen.communicate()
    103 return subprocess.CompletedProcess(popen.args, popen.returncode,
    104                                    stdout=stdout, stderr=stderr)

BrokenPipeError: [Errno 32] Broken pipe
Output is truncated. View as a scrollable element or open in a text editor. Adjust cell output settings...

\site-packages\graphviz\jupyter_integration.py

Unfortunately yes — this is down in graphviz