Optimize a way to get dataset labels #45
Description
Is your feature request related to a problem? Please describe.
Current approach to get datasframe labels from dataframe_dict is:
label_iter = iter(dataframe_dict.keys())
train_label = next(label_iter)
test_label = next(label_iter)
Which could be not really optimal.
Describe the solution you'd like
Would be nice to have something from Itertools Recipes, for ex:
https://docs.python.org/3.8/library/itertools.html#itertools-recipes