Message210137
I agree that supporting non-stdlib types is in some ways a separate issue from
how to manage coercion with mixed stdlib types. Can you provide a complete
patch (e.g. hg diff > coerce_types.patch).
http://docs.python.org/devguide/
There should probably also be tests added for situations where the current
implementation behaves undesirably. Something like these ones:
http://hg.python.org/cpython/file/a97ce3ecc96a/Lib/test/test_statistics.py#l1445
Note that when I said non-stdlib types can be handled by coercing to float I
didn't mean that the output should be coerced to float but rather the input
should be coerced to float because __float__ is the most consistent interface
available on third party numeric types.
Once the input numbers are converted to float statistics._sum can handle them
perfectly well. In this case I think the output should also be a float so that
it's clear that precision may have been lost. If the precision of float is not
what the user wants then the documentation can point them toward
Fraction/Decimal. |
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Date |
User |
Action |
Args |
2014-02-03 15:13:49 | oscarbenjamin | set | recipients:
+ oscarbenjamin, gregory.p.smith, ncoghlan, larry, steven.daprano, wolma |
2014-02-03 15:13:49 | oscarbenjamin | link | issue20481 messages |
2014-02-03 15:13:49 | oscarbenjamin | create | |
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