How long is the stump?
The stump is long.
     src        edge_attr  dst
0      0  to the right of   15
1      1  to the right of   22
2      1  to the right of   15
3      1  to the right of   13
4      1  to the right of    9
..   ...              ...  ...
99    22   to the left of   16
100   22  to the right of   19
101   23  to the right of   10
102   23  to the right of   19
103   23  to the right of   18

[104 rows x 3 columns]