- "dfp.drop(columns=['closedAt','milestone', 'url'], inplace=True)"
+ "closed_dates = pd.to_datetime(df['closedAt'], format='ISO8601')\n",
+ "dfp['year'] = closed_dates.dt.year\n",
+ "\n",
+ "# TODO: Split by YEAR before dropping 'closedAt'\n",
+ "dfp.drop(columns=['closedAt','milestone', 'url'], inplace=True)\n",
+ "print(dfp)"