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app/django/utils/checksums.py
author Lennard de Rijk <ljvderijk@gmail.com>
Mon, 16 Feb 2009 20:38:35 +0000
changeset 1364 b2709805fafe
parent 54 03e267d67478
permissions -rw-r--r--
Update org bulk accept script. The script now: 1) leaves correctly control to the browser to update the GUI of the progress bar during ajax communication. 2) Displays an error if something went wrong (I've tried in my box stopping the server while doing the requests), and show a retry button to fetch again the list of the applications that are still not accepted and iterate over them again (seems to recover correctly restarting the server after the error in my box) 3) doesn't display any text at the beginning, and the button has the correct CSS class assigned 4) Check if there are applications to accept, if not displays a message stating that there are no orgs to accept. Patch by: Mario Ferraro Reviewed by: Lennard de Rijk
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03e267d67478 Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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"""
03e267d67478 Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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Common checksum routines (used in multiple localflavor/ cases, for example).
03e267d67478 Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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"""
03e267d67478 Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
changeset




     5


__all__ = ['luhn',]













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
changeset




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LUHN_ODD_LOOKUP = (0, 2, 4, 6, 8, 1, 3, 5, 7, 9) # sum_of_digits(index * 2)













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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changeset




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def luhn(candidate):













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Todd Larsen <tlarsen@google.com>


parents: 

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    """













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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changeset




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    Checks a candidate number for validity according to the Luhn













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
changeset




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    algorithm (used in validation of, for example, credit cards).













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
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    Both numeric and string candidates are accepted.













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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    """













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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    if not isinstance(candidate, basestring):













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
changeset




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        candidate = str(candidate)













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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    try:













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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        evens = sum([int(c) for c in candidate[-1::-2]])













03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

diff
changeset




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        odds = sum([LUHN_ODD_LOOKUP[int(c)] for c in candidate[-2::-2]])













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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        return ((evens + odds) % 10 == 0)













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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    except ValueError:  # Raised if an int conversion fails













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Major reorganization of the soc svn repo, to merge into a single App Engine



Todd Larsen <tlarsen@google.com>


parents: 

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        return False















py_tasks_melange