A Python module for working with 10- and 13-digit ISBNs
Home Page: https://pyisbn.readthedocs.io/
License: GNU General Public License v3.0
Hi, I’m James. I’m a Senior Developer with EADS, specialising in navigation systems(both GNNS and land-based).
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pyisbn determines that these ISBNs are invalid:
2901568582497
5800034170763
pyisbn parses these and returns True on a call to validate()
Full script to reproduce in case I'm using the package incorrectly:
#! /usr/bin/env python3
import pyisbn
import logging
def validate_isbn(isbn_string):
try:
parsed_isbn = pyisbn.Isbn(isbn_string)
except pyisbn.IsbnError:
logging.error("pyisbn: failed to parse this ISBN: {}".format(isbn_string))
return False
try:
if not parsed_isbn.validate():
logging.warning('pyisbn:Invalid ISBN: {}'.format(isbn_string))
return False
except pyisbn.IsbnError:
logging.error("pyisbn: failed to parse this ISBN: {}".format(isbn_string))
return False
return True
if __name__ == '__main__':
validate_isbn('2901568582497')
validate_isbn('5800034170763')
pyisbn version: 1.2.0python version: 3.6.5Can you please release this using LGPL or BSD? I would like to use it in my codebase which is non-GPL. Thanks for your consideration.
easy_install of this package does not work because the URL on pypi is 404:
I've held off adding this directly to pyisbn for a few years now, mostly
because it isn't clear that:
I'm starting to think hyphenation should exist directly in pyisbn, and it
should be added before the [perhaps] imminent stable release. However, how
should it be done?
Recreate a database and include it in the package
Define a format for a database and add a parser for the database
Add a function to pull one of the online databases and let users deal with the
licensing issues. In some regions the data is freely available, and we
shouldn't really penalize people who don't live in places with silly restrictions.
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Hi,
I am developing and small app that reads books from a DB and validate each ISBN which maybe lack of ISBN-13 conversion (which is needed).
Now, the DB contains many ISBN like this one, which throws:
pyisbn.validate("7798404510807")
Traceback (most recent call last):
File "", line 1, in
File "/home/gustavo/Nextcloud/GDNet/Clientes/Patalibro/Desarrollo Lector/GetBooksPrices/venv/lib/python3.10/site-packages/pyisbn/init.py", line 504, in validate
isbn = _isbn_cleanse(isbn)
File "/home/gustavo/Nextcloud/GDNet/Clientes/Patalibro/Desarrollo Lector/GetBooksPrices/venv/lib/python3.10/site-packages/pyisbn/init.py", line 414, in _isbn_cleanse
raise IsbnError('invalid Bookland region')
pyisbn.IsbnError: invalid Bookland region
The Book indeed exist (https://www.quade.com.ar/agendas-2024/25415-agenda-2024-a5-2-dia-bruja-cristales-purpura-hechicera-7798404510807.html). Any ideas how to solve/skip this?
pyisbn version: 1.3.1python version: 3.10Please investigate to merge with http://arthurdejong.org/python-stdnum/ in order to join forces and have one Python module for ISBN.
Thanks for making this useful library available. While trying to filter invalid isbns from a list of 999 items with a function that calls pyisbn.validate(), the operation failed because some isbns were less than 10 digits. However, each subsequent call to pyisbn.validate() kept returning (after the boolean) parts of the previous list. See output 82 - 91. Any idea why?
In [81]: testresult = filter(v, test)
---------------------------------------------------------------------------
IsbnError Traceback (most recent call last)
<ipython-input-81-519d0e9e2e9c> in <module>()
----> 1 testresult = filter(v, test)
<ipython-input-72-31b0fb728e9e> in v(x)
1 def v(x):
----> 2 return not(pyisbn.validate(x))
c:\python27\lib\site-packages\pyisbn\__init__.pyc in validate(isbn)
420
421 """
--> 422 isbn = _isbn_cleanse(isbn)
423 return isbn[-1].upper() == calculate_checksum(isbn[:-1])
c:\python27\lib\site-packages\pyisbn\__init__.pyc in _isbn_cleanse(isbn, checksum)
337 raise IsbnError('non-digit checksum')
338 else:
--> 339 raise IsbnError('ISBN must be either 10 or 13 characters long')
340 else:
341 if len(isbn) == 8:
IsbnError: ISBN must be either 10 or 13 characters long
1149684", "9780691122700", "9780841225695", "9781847552594", "9780841225435", "9780470547847", "9780521876285", "978-143
In [82]: pyisbn.validate("691147949")
Out[82]: True9780534493493", "9780321750891", "9781118017166", "123849888", "9780521736534", "978-0415306362", "98718426
55207", "9780578026152", "978-1849801157", "9781577666936", "9781560328582", "9780854041763", "978-1845426606", "9781890
In [83]: pyisbn.validate("691d147949")
---------------------------------------------------------------------------05032280", "9781592330409", "978091125770", "
IsbnError Traceback (most recent call last)36128663", "9789814280143", "9780205424177",
<ipython-input-83-e8f3bd933b41> in <module>()396", "9783631566152", "9780470598801", "9789812771759", "9780521674423", "
----> 1 pyisbn.validate("691d147949")-0470927076", "9780521877015", "470129239", "9780470129234", "9780205402878", "9781
565939790", "470484098", "9789814322249", "9789812561992", "978-1597496599", "978-0231101332", "9781890627706", "9780470
c:\python27\lib\site-packages\pyisbn\__init__.pyc in validate(isbn)3208496", "9781848729018", "9780763754006", "97807637
420 "9780415774680", "9780521182491", "3527410392", "978-1111578718", "9781848167582", "978-1571170576", "9789812700
421 """01703", "9781413015898", "9780631197119", "9780415520683", "9780470585894", "9781405124416", "97814027682
--> 422 isbn = _isbn_cleanse(isbn) "9781107403758", "9783642107092", "9789812837516", "9780131395060", "978-00729219
423 return isbn[-1].upper() == calculate_checksum(isbn[:-1])2101", "9781107004528", "9781849730914", "9780813817
910", "9781555815363", "471215023", "9781849730525", "9781597560368", "9780415605250", "9789814291675", "9780521856980",
c:\python27\lib\site-packages\pyisbn\__init__.pyc in _isbn_cleanse(isbn, checksum)9", "1597497258", "9789812383068", "97
326 raise TypeError('ISBN must be a string, received %r' % isbn)49633", "9781848166813", "9781555814816", "9
327 if not isbn[:-1].isdigit():571172129", "9781592579020", "9780737750836", "9780970245823", "9781107010468", "
--> 328 raise IsbnError('non-digit parts') "9789814295772", "1555815030", "1842651196", "9780840054449", "978084
329 if checksum:", "1842653989", "9780471757399", "9781111425562", "9781111573997", "9781111573980", "9780538733
330 if len(isbn) == 9:", "9781842652961", "9780521761314", "9781618120120", "9780954699918", "9780199561797"
, "9780470627761", "9781848165601", "9780309158954", "9780763784508", "9780194372398", "9780805804669", "9780199564811",
IsbnError: non-digit parts166042", "9780691074535", "9781847355560", "9781555616049", "9780691128610", "9781577663485",
"9780854049561", "9780470616912", "9781847552259", "9780521864299", "9780854044665", "9781847350930", "9781847350954", "
In [84]: pyisbn.validate("6912147949")
Out[84]: False "9780521513692", "9789814293761", "9780840049315", "9781842656242", "9780195171693", "9781842652466", "97
89812388582", "9789812565280", "9781592333219", "9780981604558", "9789812561121", "9780309160353", "978-1593701390", "15
In [85]: pyisbn.validate("6912147949")
Out[85]: False71170453", "9781847552402", "9780521518192", "9789812778987", "9781603560085", "9780309137164", "978981277
1131", "9781107009653", "978-1571172013", "978-1571172044", "978-1571172020", "978-0692000274", "9780309187510", "978184
In [86]: pyisbn.validate("6912147949")
Out[86]: False9814329835", "9781555816612", "9780314911612", "9781107403505", "9781602391246", "978-1613504444", "978-11
19993056", "9781599290591", "9780863775697", "9780521899543", "978-9064507434", "9780521699099", "9789814355506", "12382
In [87]: pyisbn.validate("978-0262062664")
Out[87]: True47355591", "9780521651516", "9780470623961", "9780470624296", "9781118156438", "9780312586300", "978-906450
6482", "9781401323448", "9780425213575", "978-1571172143", "978-1571171986", "0-57117-072-3", "978-1571172051", "978-052
In [88]: pyisbn.validate("978-0262062664")
Out[88]: True1848720398", "978-0517562208", "978-1848448346", "9780309138505", "978-9064506710", "9780983490708", "97806
91149493", "1597496618", "1597496537", "9781930448360", "9780521138178", "9781107013469", "9781578263097", "978089529817
In [89]: pyisbn.validate("978-0262062664")
Out[89]: True"9780691131382", "9780691144146", "9780805077469", "9780470538708", "9780674403451", "9781453837085", "9780
691142890", "052117533X", "9780415882194", "9780345494580", "9781568989723", "9789812560421", "9780982290040", "97811080
In [90]: pyisbn.validate("978-0262062664")
Out[90]: True80217371858", "9781594868283", "9781107401648", "9781569242742", "9781848166011", "9780470455753", "9780452
296886", "9780195128987", "9781594770951", "9780312376321", "9781573317566", "9780520202535", "9781859574980", "97805211
In [91]: pyisbn.validate("981429134X")
Out[91]: True02458", "9780309148504", "9781849800204", "9781849730433", "9781849730433", "9789812560889", "9780071636919
", "9780309148382", "9780470655887", "978-1847202055", "9780123814753", "9780970245816", "9780446690744", "9789814295512
In [92]: testresult
Out[92]: []
In [93]: pyisbn.validate("981429134X")
Out[93]: True
In [94]: pyisbn.validate("981429234X")
Out[94]: False
easy_install http://www.jnrowe.ukfsn.org/_downloads/pyisbn-0.5.0.tar.bz2
fails on Python 2.5.4 with the following error:
File "setup.py", line 150
except OSError as e:
^
SyntaxError: invalid syntax
When try to replace the dash of the unicode isbn, it will raise a UnicodeDecodeError, is it ok to convert the isbn to str inside the _isbn_cleanse rather than let the users do it themselves?
I knew you have forced the input must be str type, but I think it will make the api much flexible to support various type string. (I mean str and unicode)
Hi 👊
This is my first visit to this fine repo, but it seems you have been working hard to keep all dependencies updated so far.
Once you have closed this issue, I'll create separate pull requests for every update as soon as I find one.
That's it for now!
Happy merging! 🤖
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