Is the mirror to the left or to the right of the picture?
The mirror is to the left of the picture.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of   15
2     0   to the left of    4
3     0  to the right of   13
4     0   to the left of   10
..  ...              ...  ...
69   15  to the right of   13
70   15   to the left of   10
71   15   to the left of   14
72   15  to the right of    0
73   15               in    7

[74 rows x 3 columns]