If you aren't using Flask, you can use SqlAlchemy function 'slice' or a combo of 'limit' & 'offset', as mentioned here. E.g.:
some_query = Query([TableBlaa])
query = some_query.limit(number_of_rows_per_page).offset(page_number*number_of_rows_per_page)
# -- OR --
query = some_query.slice(page_number*number_of_rows_per_page, (page_number*number_of_rows_per_page)+number_of_rows_per_page)
current_pages_rows = session.execute(query).fetchall()
