think we could just put:
import sys if sys.version_info < (3, 0): raise ValueError('This package requires python >= 3.0')
at the root
np.array([fn(*[self.take(i)[col] for col in column_label]) for i in range(self.num_rows)])
for col in column_labelso now it's passing each column that you give individually, that way it never tries to pass a list
ds8.berkeley.edu, so I have no ability to install there, but let me try locally. What version are you on?