---
source: hydroflow/tests/surface_python.rs
expression: "hf.meta_graph().unwrap().to_mermaid(&Default::default())"
---
%%{init:{'theme':'base','themeVariables':{'clusterBkg':'#ddd','clusterBorder':'#888'}}}%%
flowchart TD
classDef pullClass fill:#8af,stroke:#000,text-align:left,white-space:pre
classDef pushClass fill:#ff8,stroke:#000,text-align:left,white-space:pre
classDef otherClass fill:#fdc,stroke:#000,text-align:left,white-space:pre
linkStyle default stroke:#aaa
1v1[\"(1v1) <code>source_iter([(5, 1)])</code>"/]:::pullClass
2v1[\"<div style=text-align:center>(2v1)</div> <code>py_udf(&quot;<br>def add(a, b):<br>return a + b<br>&quot;, &quot;add&quot;)</code>"/]:::pullClass
3v1[\"<div style=text-align:center>(3v1)</div> <code>map(|x: PyResult&lt;Py&lt;PyAny&gt;&gt;| Python::with_gil(|py| {<br>    usize::extract(x.unwrap().as_ref(py)).unwrap()<br>}))</code>"/]:::pullClass
4v1[/"(4v1) <code>assert_eq([6])</code>"\]:::pushClass
3v1-->4v1
2v1-->3v1
1v1-->2v1
subgraph sg_1v1 ["sg_1v1 stratum 0"]
    1v1
    2v1
    3v1
    4v1
end