#17129: Posets constructor does not check argument
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Reporter: jmantysalo | Owner:
Type: defect | Status: new
Priority: trivial | Milestone: sage-6.4
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jmantysalo):
* cc: ncohen (added)
Comment:
Is there some reason for ''not'' to check arguments on other functions?
For example
{{{
Posets.RestrictedIntegerPartitions('cat-says-meow')
Posets.SymmetricGroupBruhatIntervalPoset('cat-says-meow', 42)
Posets.BooleanLattice('cat-says-meow')
}}}
will all give exception, but they output
{{{
ValueError: n must be an integer or be equal to one of None, NN,
NonNegativeIntegers()
ValueError: invalid literal for int() with base 10: ''
TypeError: unsupported operand type(s) for ** or pow(): 'int' and 'str'
}}}
Is right check just `if not n in ZZ: raise...`?
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Ticket URL: <http://trac.sagemath.org/ticket/17129#comment:1>
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