# xarray.groupers.SeasonResampler

### *class* xarray.groupers.SeasonResampler(seasons, , drop_incomplete=True)[[source]](https://github.com/pydata/xarray/blob/main/xarray/groupers.py#L881-L1120)

Allows grouping using a custom definition of seasons.

* **Parameters:**
  * **seasons** (`Sequence[str]`) – An ordered list of seasons.
  * **drop_incomplete** ([`bool`](https://docs.python.org/3/builtins/functions.html#bool)) – Whether to drop seasons that are not completely included in the data.
    For example, if a time series starts in Jan-2001, and seasons includes “DJF”
    then observations from Jan-2001, and Feb-2001 are ignored in the grouping
    since Dec-2000 isn’t present.

### Examples

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```pycon
>>> SeasonResampler(["JF", "MAM", "JJAS", "OND"])
SeasonResampler(seasons=['JF', 'MAM', 'JJAS', 'OND'], drop_incomplete=True)
```

```pycon
>>> SeasonResampler(["DJFM", "AM", "JJA", "SON"])
SeasonResampler(seasons=['DJFM', 'AM', 'JJA', 'SON'], drop_incomplete=True)
```

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#### \_\_init_\_(seasons, , drop_incomplete=True)[[source]](https://github.com/pydata/xarray/blob/main/xarray/../doc/<string>)

### Methods

| [`__init__`](#xarray.groupers.SeasonResampler.__init__)(seasons, \*[, drop_incomplete])                                         |                                                            |
|-----------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------|
| [`compute_chunks`](xarray.groupers.SeasonResampler.compute_chunks.html.md#xarray.groupers.SeasonResampler.compute_chunks)(variable, \*, dim) | Compute chunk sizes for this season resampler.             |
| `factorize`(group)                                                                                                                | Creates intermediates necessary for GroupBy.               |
| `reset`()                                                                                                                         | Creates a new version of this Grouper clearing any caches. |

### Attributes

| `drop_incomplete`   |    |
|---------------------|----|
| `seasons`           |    |
| `season_inds`       |    |
| `season_tuples`     |    |