diff options
Diffstat (limited to 'django/utils')
| -rw-r--r-- | django/utils/checksums.py | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/django/utils/checksums.py b/django/utils/checksums.py deleted file mode 100644 index c74631acb2..0000000000 --- a/django/utils/checksums.py +++ /dev/null @@ -1,34 +0,0 @@ -""" -Common checksum routines. -""" - -__all__ = ['luhn'] - -import warnings - -from django.utils import six -from django.utils.deprecation import RemovedInDjango110Warning - -warnings.warn( - "django.utils.checksums will be removed in Django 1.10. The " - "luhn() function is now included in django-localflavor 1.1+.", - RemovedInDjango110Warning -) - -LUHN_ODD_LOOKUP = (0, 2, 4, 6, 8, 1, 3, 5, 7, 9) # sum_of_digits(index * 2) - - -def luhn(candidate): - """ - Checks a candidate number for validity according to the Luhn - algorithm (used in validation of, for example, credit cards). - Both numeric and string candidates are accepted. - """ - if not isinstance(candidate, six.string_types): - candidate = str(candidate) - try: - evens = sum(int(c) for c in candidate[-1::-2]) - odds = sum(LUHN_ODD_LOOKUP[int(c)] for c in candidate[-2::-2]) - return ((evens + odds) % 10 == 0) - except ValueError: # Raised if an int conversion fails - return False |