#5693: sloane_sequence -- very confusing error message
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Reporter: was | Owner: cwitty
Type: defect | Status: new
Priority: major | Milestone: sage-3.4.1
Component: misc | Keywords:
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The "sloan_sequence" command fails on every input I give it, whereas
sloan_find works fine!
{{{
sage: sloane_sequence(prime_range(100))
Searching Sloane's online database...
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
/Users/wstein/.sage/temp/teragon.local/4529/_Users_wstein__sage_init_sage_0.py
in <module>()
/Users/wstein/build/sage-3.4/local/lib/python2.5/site-
packages/sage/databases/sloane.pyc in sloane_sequence(number)
302 results = sloane_find('id:A%s'%number)
303 if len(results) == 0:
--> 304 raise ValueError, "sequence '%s' not found"%number
305 return results[0]
306
ValueError: sequence '[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43,
47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]' not found
sage: print sloane_find(prime_range(100))
Searching Sloane's online database...
[[40, 'The prime numbers.', [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37,
41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109,
113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193,
197, 199, 211, 223,
}}}
Doh -- on checking the docs it appears that sloane_sequence takes a
sequence number... and it just happens to be perfectly fine letting that
"number" be a list. Much better type checking would save a lot of
confusion.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5693>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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