quiet conversion functions

[Sion Arrowsmith]

Tim Chase  <python.list at tim.thechases.com> wrote:
>def CFloat(value):
>	try:
>		value = float(value)
>	except (ValueError, TypeError):
>		value = 0
>	return value

>>> type(CFloat(None))
<type 'int'>

I think you want value = 0.0 . And you might also want to consider
what errors you may be masking in silently turning *anything* into
a valid number.

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