Hy I have a dataframe with the following structure
| Id | Vehicle1 | Vehicle2 |
|---|---|---|
| 1 | car | motorcycle |
| 2 | bike | car |
| 3 | motorcycle | bike |
And I want to group in one dataframe with onlyone column vehicle with that structure
| Id | Vehicle |
|---|---|
| 1 | car |
| 1 | motorcycle |
| 2 | bike |
| 2 | car |
| 3 | motorcycle |
| 3 | bike |
how can I do it with python/pandas?
I tried with groupby but i failed.
Thanks!