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This issue was raised by Jim on Rietveld:
Currently, the order of arguments in Context.__init__() differs
from repr(Context):
>>> Context()
Context(prec=28, rounding=ROUND_HALF_EVEN, Emin=-999999999, Emax=999999999, capitals=1, flags=[], traps=[DivisionByZero, Overflow, InvalidOperation])
>>> 
>>> Context(28, ROUND_HALF_EVEN, -999999999, 999999999, 1, [], [DivisionByZero, Overflow, InvalidOperation])
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "/usr/lib/python3.2/decimal.py", line 3774, in __init__
 flags = dict([(s, int(s in flags)) for s in _signals])
 File "/usr/lib/python3.2/decimal.py", line 3774, in <listcomp>
 flags = dict([(s, int(s in flags)) for s in _signals])
TypeError: argument of type 'int' is not iterable
>>> 
I find this quite ugly. The repr() order is the good one, since
it moves the flag dictionaries to the end. I wanted to change
the order in Context.__init__() to match repr(), but I'm not
sure if such a change is possible.
I don't think Python code would initialize a context without keywords,
but C extensions might.