find_categorical_variables

feature_engine.variable_handling.find_categorical_variables(X)

Returns a list with the names of all the categorical variables in a dataframe. Note that variables cast as object that can be parsed to datetime will be excluded.

More details in the User Guide.

Parameters

Xpandas dataframe of shape = [n_samples, n_features]

The dataset

Returns

variables: List

The names of the categorical variables.

Examples

>>> import pandas as pd
>>> from feature_engine.variable_handling import find_categorical_variables
>>> X = pd.DataFrame({
>>>     "var_num": [1, 2, 3],
>>>     "var_cat": ["A", "B", "C"],
>>>     "var_date": pd.date_range("2020-02-24", periods=3, freq="T")
>>> })
>>> var_ = find_categorical_variables(X)
>>> var_
['var_cat']

Return type

List[Union[str, int]]