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).

Agreed on both counts.  I'll take a look.

The shift function should also accept an integer 2nd argument.

There were a number of Decimal methods that failed to accept an integer 
second argument.  I've fixed that in r75944.

And the shift and rotate bugs for large arguments are fixed in r75945.

Merged (along with a test numbering fix in extra.decTest) in r75946 
(release26-maint), r75947 (py3k) and r75948 (release31-maint).

Thanks for the report!