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)
[1 2 3] <class 'polars.series._numpy.SeriesView'>
Am i doing something wrong here and if not how should i work around this?
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