draw_ascii

Example:

from langchain_core.runnables.graph_ascii import draw_ascii

vertices = {1: "1", 2: "2", 3: "3", 4: "4"}
edges = [
    (source, target, None, None)
    for source, target in [(1, 2), (2, 3), (2, 4), (1, 4)]
]

print(draw_ascii(vertices, edges))

         +---+
         | 1 |
         +---+
         *    *
        *     *
       *       *
    +---+       *
    | 2 |       *
    +---+**     *
      *    **   *
      *      ** *
      *        **
    +---+     +---+
    | 3 |     | 4 |
    +---+     +---+