skoot.utils.validate_multiple_cols

skoot.utils.validate_multiple_cols(clsname, cols)

Validate that there are at least two columns to evaluate.

This is used for various feature selection techniques, as well as in several feature extraction techniques.

Parameters:

clsname : str or unicode

The name of the class that is calling the function. Used for more clear error messages.

cols : array-like, shape=(n_features,)

The columns to evaluate. If cols is not None and the length is less than 2, will raise a ValueError.