What kind of place do you think it is?
It is a display.
    src        edge_attr  dst
0     0  to the right of    1
1     1   to the left of   17
2     1   to the left of   10
3     1   to the left of    6
4     1   to the left of    0
..  ...              ...  ...
80   19   to the left of    6
81   19               of    5
82   20               of    5
83   20  to the right of    1
84   20  to the right of    2

[85 rows x 3 columns]