I have a dataframe like the one below -
How can I combine the rows such that all the neighbourhoods belonging to the same Postcode are displayed in the same row seperated by commas. Something like this -
| Postcode | Borough | Neighbourhood |
| M1B | Scarborough | Rouge, Malvern |
| M5A | Downtown Toronto | Harbourfront, Regent Park |
| M6A | North York | Lawrence Heights, Lawrence Manor |
and the rest of the rows as they are...