Ambiguous error whilst adding tooltips to drawings?

[Ctri-The-Third]

Hello!

My goal is to have a tooltip on a drawn item (currently a circle, eventually a sprite).
However I'm getting an error when I do so: <built-in function add_text> returned a result with an exception set which from my research suggests that I'm not using the correct methods (something about yielding vs creating items, which I don't fully follow I admit)

Here's the trimmed code:

import straders_sdk.models as models
import dearpygui.dearpygui as dpg


orbitals = ["ORBITAL_STATION", "MOON"]


def render_system(system: models.System, width, height, zoom_scale=3, cv=[0, 0]):
    # draw all the planets in the system
    for w in [t for t in system.waypoints if t.type not in orbitals]:
        w: models.Waypoint
        dpg.draw_circle(
            [
                (w.x * zoom_scale) + cv[0],
                (w.y * zoom_scale) + cv[1],
            ],
            5,
            fill=[255, 0, 0, 255],
            thickness=1,
            tag=w.symbol,
        )
        # lots of issues here, something to do with the difference between
        # dpg.tooltip and dpg.add_tooltip, withs, yields, etc...
        ttip_int = dpg.add_tooltip(w.symbol)
        val = dpg.add_text(
            f"Symbol: {w.symbol}\nType: {w.type}\nLocation: {w.x}, {w.y}\nTraits: {[t.name for t in w.traits]}",
            parent=ttip_int,
        )

And that code is called from

with dpg.window(
    label="Tutorial",
    no_collapse=True,
    no_resize=True,
    no_move=True,
    no_scroll_with_mouse=True,
    no_scrollbar=True,
):
    with dpg.drawlist(page_width, page_height - 50):
        with dpg.draw_layer(tag="system_view"):
            render_system(target_system, page_width, page_height, zoom_scale, cv)

that's not a complete bit of code, but it works fine until the add_text to tooltip method is added, after which it falls apart.
I tried using "with tooltip(w.symbol):" and got the same error at the end, which other discussions here suggested could be important (I assume the difference between using yield something and variable = something? My knowledge on the subject of generators is a little lacking, so if that's an area I need to read up on before continuing, please let me know

Any insights would be much appreciated!