Error : a bytes-like object is required, not 'str' : ['dot', '-Tsvg']

[CesMak]

Hey If I try your example with mkdocs material I get this error:

Error : a bytes-like object is required, not 'str' : ['dot', '-Tsvg']

For this code: {% dot attack_plan.svg digraph G { rankdir=LR Earth [peripheries=2] Mars Earth -> Mars } %}

I also tried to incooperate it like this:

```graphviz
digraph finite_state_machine {
    rankdir=LR;
    size="8,5"

    node [shape = doublecircle]; S;
    node [shape = point ]; qi

    node [shape = circle];
    qi -> S;
    S  -> q1 [ label = "a" ];
    S  -> S  [ label = "a" ];
    q1 -> S  [ label = "a" ];
    q1 -> q2 [ label = "ddb" ];
    q2 -> q1 [ label = "b" ];
    q2 -> q2 [ label = "b" ];
}

[WesRoach]

The latest version on PyPI doesn't contain the latest merge for 3.x.

I resolved with:

pip install git+https://github.com/sprin/markdown-inline-graphviz.git@9664863b3002d88243c9ee5e14c195e037e54618#egg=markdown-inline-graphviz

& mkdocs.yml:

markdown_extensions:
  - mdx_inline_graphviz

That's not an ideal solution.
I'm not sure if @sprin plans on pushing to PyPI, or if there are other options. I'm relatively new to Python and I'm reading Package documentation for the first time.

[cesaremorel]

I had the same problem and decided to upload a new package to Pypi. You can install it with:

pip3 install markdown_inline_graphviz_extension --user

and in your mkdocs.yml file:

markdown_extensions:
  - markdown_inline_graphviz:

[jidn]

For future readers, the fix is a change in the mdx_inline_graphviz.py file

72c72
<                     proc.stdin.write(content)
---
>                     proc.stdin.write(str.encode(content))