29 lines
654 B
Python
29 lines
654 B
Python
# -*- coding: utf-8 -*-
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import ox.web.duckduckgo
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import stdnum.isbn
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from .utils import find_isbns
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import logging
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logger = logging.getLogger(__name__)
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def find(query):
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logger.debug('find %s', query)
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query += ' isbn'
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isbns = []
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for r in ox.web.duckduckgo.find(query):
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isbns += find_isbns(' '.join(r))
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results = []
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done = set()
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for isbn in isbns:
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if isbn not in done:
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isbn = stdnum.isbn.to_isbn13(isbn)
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results.append(isbn)
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done.add(isbn)
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if len(isbn) == 13 and isbn.startswith('978'):
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done.add(stdnum.isbn.to_isbn10(isbn))
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return results
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