Ortho splines problem

Help
1

What could be the problem with these graphs when using graph_attr={‘splines’: ‘ortho’}
image
Python code for example:

            case ast.Assign(targets, value):
                assign_id = getid("assignment")
                label = f"Присвоить {ast.unparse(targets[0])} значение {ast.unparse(value)}"
                parent_node = get_parent_node(root_ast_node,
                                              ast_node)
                print(tail_id)
                graph.node(assign_id, label, shape="box", width="2.5", fixedsize="true", headport="n", tailport="s")
                if tail_id and not tail_id.startswith("cond"):  
                    graph.edge(tail_id, assign_id, dir="forward", headport="n")
                elif tail_id.startswith("cond"):
                    if isinstance(parent_node, ast.If):
                        if ast_node in parent_node.orelse:
                            graph.edge(tail_id, assign_id, label="no", dir="forward", headport="n", tailport="e")
                        else:
                            graph.edge(tail_id, assign_id, label="yes", dir="forward", headport="n", tailport="s")

                return assign_id
...
graph = graphviz.Graph(format='png', graph_attr={'splines': 'ortho'})
2

ortho does not work with ports. There are multiple issues concerning this problem

3

Here is a possible work-around. Ortho edges and ports - a partial work-around

4

Thanks for the solution. Despite the fact that it has become many times better, if each block in the initial script has “headport”=“n”, in the final form there are arrows, if several graphs need to come to one block (and even to one point), then you can watch something like this

image
image544×522 15.9 KB

I hope for your help, because I have a great desire to improve, as far as I understand, your method of solving this problem.

5

Will you share the source input?

6

As planned, this product should convert python code into a flowchart (according to Russian GOST, you know). The current implementation is still far from perfect. I do not pursue selfish goals, but to share the source code I need contacts

7

I do not need the Python, just the Graphviz that it can produce.

8

Graph.gv (2.3 KB)
myFile.dot (3.5 KB)
myfileFixed.dot (23.9 KB)

myfileFixed
myfileFixed669×1001 15.8 KB

9

Well… Anyway, I’ll be looking forward to an update for this fix.