Description

validation.check_array throws bad TypeError pandas series is passed in. It cropped up when using the RandomizedSearchCV class. Caused when line 480 is executed

480 - if hasattr(array, "dtypes") and len(array.dtypes):

Steps/Code to Reproduce

validation.check_array(y, ensure_2d=False, dtype=None) where y is a pandas series

Expected Results

No error (I'm not familiar with this code so not sure on the details)

Actual Results

TypeError: object of type 'DTYPE NAME OF THE SERIES' has no len()

Versions

0.20.1