# Polars Series.to_numpy() does not return ndarray

## Question:

I was trying to convert a series to a numpy array via `.to_numpy()`

but unlike what the documentation shows i am not getting a ndarray out but a seriesview

Running exactly the example in the documentation: https://pola-rs.github.io/polars/py-polars/html/reference/series/api/polars.Series.to_numpy.html

```
s = pl.Series("a", [1, 2, 3])
arr = s.to_numpy()
arr
type(arr)
```

I get

```
[1 2 3]
<class 'polars.series._numpy.SeriesView'>
```

Am i doing something wrong here and if not how should i work around this?

## Answers:

It looks like the documentation is incorrect. `Series.to_numpy()`

**does** return a `series._numpy.SeriesView`

object, however by looking at the source code, `series._numpy.SeriesView`

inherits the `np.ndarray`

class and just adds another attribute to the class for internal purposses.

So for all purposes, there’s nothing you need to do. You can treat the return value of `Series.to_numpy()`

as a `np.ndarray`

because every `polars.series._numpy.SeriesView`

is also a `np.ndarray`

. Any method or attribute that an `np.ndarray`

object has, it will also be present on a `polars.series._numpy.SeriesView`

object.