To grab all reviews from pull requests up to 6 months old:
python grabreviews.py > reviews.txt
In reality, it may get only 4 months due to rate limits
Special characters in review comments will land in binary, making it difficult to grep. So copy entire contents of reviews.txt and paste it into a new file reviews-t.txt in vscode.
Do your greps on reviews-t.txt, or use
python extractenglish.py >reviews-english.txt
Similarly copy entire contents of reviews-english.txt and paste to reviews-english-t.txt
Then use python hashtohash_comment.py