[Python-Dev] Adventures with Decimal

Michael Chermside mcherm at mcherm.com
Sat May 21 02:07:26 CEST 2005


Guido writes:
> It looks like if you pass in a context, the Decimal constructor still
> ignores that context

No, you just need to use the right syntax. The correct syntax for
converting a string to a Decimal using a context object is to use
the create_decimal() method of the context object:

>>> import decimal
>>> decimal.getcontext().prec = 4
>>> decimal.getcontext().create_decimal("1.234567890")
Decimal("1.235")

Frankly, I have no idea WHAT purpose is served by passing a context
to the decimal constructor... I didn't even realize it was allowed!

-- Michael Chermside



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