object

skrub.selectors.object()

Select columns whose dtype is object (pandas) or pl.Object (polars).

See also

string

Select columns that have a String data type.

has_dtype

Select columns whose dtype matches one of the provided dtypes.

Notes

Before pandas 3.0, columns containing only strings have the object dtype and are selected. From pandas 3.0 onwards they have the string dtype and are not. Use string() for selecting strings.

Examples

>>> from skrub import selectors as s
>>> import pandas as pd
>>> df = pd.DataFrame(
...     dict(
...         mixed=pd.Series(['A', 10]),
...         numeric=pd.Series([1, 2]),
...         string=pd.Series(['A', 'B']).convert_dtypes(),
...     )
... )
>>> df.dtypes
mixed       object
numeric      int64
string         ...
dtype: object

>>> s.select(df, s.object())
  mixed
0     A
1    10