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Oct 29, 2009, 2:21 AM
Post #1 of 6
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[issue7233] decimal.py: two rotate() issues
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New submission from Stefan Krah <stefan-usenet [at] bytereef>:
Hi,
I got two issues with the all-important function rotate():
1. It should probably convert an integer argument:
>>> from decimal import *
>>> c = getcontext()
>>> c.prec = 4
>>> Decimal("1000000000").rotate(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/decimal.py", line 3411, in rotate
ans = self._check_nans(other, context)
File "/usr/lib/python2.7/decimal.py", line 738, in _check_nans
other_is_nan = other._isnan()
2. When the coefficient size is greater than prec, the most significant
digits should be truncated before rotating:
>>> c.prec = 4
>>> Decimal("1000000000").rotate(Decimal(1))
Decimal('1')
The result should be 0 (checked against decNumber).
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messages: 94649
nosy: mark.dickinson, skrah
severity: normal
status: open
title: decimal.py: two rotate() issues
versions: Python 2.6, Python 2.7
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Python tracker <report [at] bugs>
<http://bugs.python.org/issue7233>
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