Traceback (most recent call last):


 "/Applications/Spyder.app/Contents/Resources/lib/python3.9/spyder/plugins/variableexplorer/widgets/collectionseditor.py", line 1708, in lessThan

return leftData < rightData
TypeError: '<' not supported between instances of 'int' and 'str'

Traceback (most recent call last):


 "bug.py", line 4, in <module>

dataset = loader.featurize('test.csv',shard_size=8192)


 "/home/lmmd_wz/anaconda3/envs/deepchem/lib/python3.5/site-packages/deepchem/data/data_loader.py", line 222, in featurize

shard_generator(), data_dir, self.tasks, verbose=self.verbose)


 "/home/lmmd_wz/anaconda3/envs/deepchem/lib/python3.5/site-packages/deepchem/data/datasets.py", line 461, in create_dataset

for shard_num, (X, y, w, ids) in enumerate(shard_generator):


 "/home/lmmd_wz/anaconda3/envs/deepchem/lib/python3.5/site-packages/deepchem/data/data_loader.py", line 209, in shard_generator

assert len(X) == len(ids) == len(y) == len(w)
TypeError: len() of unsized object
