new_contents: #!/usr/bin/python3
  import sys
  sys.path.append('..')
  from app import db
  from app.models import Review
  from lxml.html.clean import Cleaner
  
  review = Review.query.order_by(Review.id).first()
  while review is not None:
  	print(review.id)
  	cleaner = Cleaner(safe_attrs_only=False, style=False)
  	new_content = cleaner.clean_html(review.content)
  	if new_content != review.content:
  		print('=======')
  		print(review.content)
  		print('-------')
  		print(new_content)
  		print('=======')
  		review.content = new_content
  		db.session.commit()
  
  	review = Review.query.filter(Review.id > review.id).order_by(Review.id).first()
  
subject: clean reviews html