Code Structure Visualization

digraph code_structure {
    node [shape=rectangle, style=filled, color=lightblue];

    subgraph cluster_code {
        label="Code Structure";
        color=lightgrey;
        style=dashed;
        
        print [label="print" style=filled color=lightyellow];
        type [label="type" shape=ellipse];
        len [label="len" shape=ellipse];

        print -> type;
        type -> len;
    }
}

Explanation:

1. Nodes:

   • The print, type, and len are visualized as nodes.
   • print is the main function that outputs the result.
   • type is a function that determines the type of the argument passed to it.
   • len is a built-in function whose type is being evaluated.

2. Edges:

   • There is a directed edge from print to type indicating that type is passed as an argument to print.
   • There is another edge from type to len signifying that len is the argument for type.

3. Node Styles:

   • Different shapes and colors are used to indicate the type of elements (e.g., function, method).

Visual Overview:

• print function calls type.
• type function takes len as an argument.
• The types and relations are indicated using appropriate node shapes and colors.