if included_subreddits is None:
included_subreddits = select_topN_subreddits(topN)
else:
- included_subreddits = set(open(included_subreddits))
+ included_subreddits = set(map(str.strip,map(str.lower,open(included_subreddits))))
ds_filter = ds.field("subreddit").isin(included_subreddits)