I know you can get the number of selected vertices, but how about linked vertices? I have a couple mesh lines and need to get the count for each one.

```
verts_sel = len([v for v in obj.data.vertices if v.select == True])
```

I know you can get the number of selected vertices, but how about linked vertices? I have a couple mesh lines and need to get the count for each one.

```
verts_sel = len([v for v in obj.data.vertices if v.select == True])
```

You don’t even need to loop to get the selected geometry count. They are cached in:

```
obj.data.total_vert_sel
obj.data.total_face_sel
obj.data.total_edge_sel
```

Linked edges/verts can be found with something like this. You’ll need to have a starting vert (or edge).

```
import bpy, bmesh
me = bpy.context.object.data
bm = bmesh.from_edit_mesh(me)
def any_vert(bm):
for v in bm.verts:
if v.select:
return v
vert_start = any_vert(bm)
if vert_start is not None:
verts = {vert_start} # All verts connected to vert_start.
edges = set()
check_edges = {*vert_start.link_edges}
while check_edges:
e = check_edges.pop()
if e in edges:
continue
edges.add(e)
for v in e.verts:
if v in verts:
continue
verts.add(v)
for e_ in v.link_edges:
if e_ in edges:
continue
check_edges.add(e_)
for v in verts:
v.select = True
bmesh.update_edit_mesh(me)
```

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