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| author | Arthur de Jong <arthur@arthurdejong.org> | 2017-08-30 22:32:17 +0200 |
|---|---|---|
| committer | Arthur de Jong <arthur@arthurdejong.org> | 2017-08-30 22:32:17 +0200 |
| commit | a71a1acedaa81c95042337856e4f5ecef84dfdd6 (patch) | |
| tree | a5c705b523563c5e99363807c259e7f551bc632b /stdnum | |
| parent | 8f6fa7db038a29941b70862386ae4120499637d2 (diff) | |
Check bookland code in ISBN
This ensures that an InvalidComponent() exception is raised when an
unknown EAN bookland code is found. It will also raise this exception
when using to_isbn10() when not using the 978 code.
Diffstat (limited to 'stdnum')
| -rw-r--r-- | stdnum/isbn.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/stdnum/isbn.py b/stdnum/isbn.py index 2f42a45..e80f58a 100644 --- a/stdnum/isbn.py +++ b/stdnum/isbn.py @@ -100,6 +100,8 @@ def validate(number, convert=False): raise InvalidChecksum() elif len(number) == 13: ean.validate(number) + if number[:3] not in ('978', '979'): + raise InvalidComponent() else: raise InvalidLength() if convert: @@ -159,7 +161,7 @@ def to_isbn10(number): elif isbn_type(min_number) != 'ISBN13': raise InvalidFormat('Not a valid ISBN13.') elif not number.startswith('978'): - raise InvalidFormat('Does not use 978 Bookland prefix.') + raise InvalidComponent('Does not use 978 Bookland prefix.') # strip EAN prefix number = number[3:-1].strip().strip('-') digit = _calc_isbn10_check_digit(min_number[3:-1]) |