[Python-Dev] dateutil (original) (raw)

Skip Montanaro skip at pobox.com
Thu Mar 11 14:50:37 EST 2004 

Robert> I like the generator I wrote, but that should be easy enough to
Robert> wrap around rrules. Ditto for the natural-language parser.

I'd like to try out your natural language parser, but can't find it. I naively thought this might work, but it doesn't:

>>> import recur
>>> import datetime
>>> for eachDate in recur.Recurrence(datetime.date(2004, 1, 7), "every 4 days", datetime.date(2004, 4, 15)):
...   print eachDate
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "recur.py", line 599, in __init__
    raise ValueError, (u"The supplied description ('%s') "
ValueError: The supplied description ('every 4 days') could not be parsed.

I realize this is a usage question and python-dev isn't a usage list. Still, it suggests that perhaps the community as a whole needs a bit more exposure to these concepts before they are incorporated into the standard library. Perhaps a PEP about recurrence relations is warranted.

Skip

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