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__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
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'''Read meta information from PDF files'''
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import os, subprocess, shutil, re
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from functools import partial
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from calibre import prints
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from calibre.constants import iswindows
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from calibre.ptempfile import TemporaryDirectory
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MetaInformation, string_to_authors, check_isbn, check_doi)
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from calibre.utils.ipc.simple_worker import fork_job, WorkerError
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#_isbn_pat = re.compile(r'ISBN[: ]*([-0-9Xx]+)')