Mark Dickinson <[email protected]> added the comment:
Thanks for the latest patch! It's looking good, but I have a few comments:
(1) It's not necessary to do an isinstance(a, Decimal) check before calling
_convert_other, since _convert_other does that check anyway. It doesn't really
harm either, but for consistency with the way the Decimal methods themselves
are written, I think the isinstance check should be left out.
(2) The error message that's produced when the Decimal operation returns
NotImplemented is a bit strange:
>>> decimal.getcontext().add(2, 'bob')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/dickinsm/python/svn/trunk/Lib/decimal.py", line 3869, in add
raise TypeError("Unable to convert %s to Decimal" % r)
TypeError: Unable to convert NotImplemented to Decimal
Presumably that '% r' should be '% b' instead.
(3) It looks like Context.power is missing a NotImplemented check:
>>> decimal.getcontext().power(2, 'bob')
NotImplemented
(4) We should consider updating the documentation for the Context methods,
though there's actually nothing there that would suggest that these operations
wouldn't work for integers.
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<http://bugs.python.org/issue7633>
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