[issue15882] _decimal.Decimal constructed from tuple

[Stefan Krah]

Stefan Krah added the comment:

Thanks for the report and the patch. I used another approach that still
validates the digits in the coefficient tuple even if it is not used.

decimal.py allows any coefficient:

>>> Decimal((0, ('n', 'a', 'n'), 'F'))
Decimal('Infinity')

_decimal raises:

>>> Decimal((0, ('n', 'a', 'n'), 'F'))
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: coefficient must be a tuple of digits

I'm leaving the issue open: If some release blocker arises, we could get this
into 3.3.0-rc3.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15882>
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