If you are okay with the edges going from right to left instead of left to right, you can do it like this in Python: def main(): a, b, c = Node("a"

If you are okay with the edges going from right to left instead of left to right, you can do it like this in Python: def main(): a, b, c = Node("a"), Node("b"), Node("c") edges = [ a <- b | "first edge", b <- c | "second edge", c <- a | "third edge", ] print("Edges:") for edge in edges: print(edge) class Node: def __init__(self, name): self.name = name def __lt__(self, other): return Edge(self, other) def __neg__(self): return self def __or__(self, label): self.label = label return self class Edge: def __init__(self, a, b): self.a = a self.b = b def __repr__(self): return f"{self.a.name} <- {self.b.name}: {self.b.label}" main() It works like this: The '-' sign is interpreted as a unary minus, which is simply discarded. The '<' symbol is handled by the '__lt__' overload of the Node class. The '|' operator has precedence over '<' in Python, so the edge label is stored in the right-hand side node. That being said, I will haunt you if you actually use this in production.