DOC: Add documentation for groupby.expanding()
#48139
| Job | Run time |
|---|---|
| 20m 11s | |
| 3m 7s | |
| 16m 33s | |
| 1m 41s | |
| 41m 32s |
groupby.expanding()
#48139
| Job | Run time |
|---|---|
| 20m 11s | |
| 3m 7s | |
| 16m 33s | |
| 1m 41s | |
| 41m 32s |