[Python-ideas] BindError as a built-in TypeError subclass (on the margin of PEP 362 discussion)
yselivanov.ml at gmail.com
Sun Jun 10 06:36:36 CEST 2012
On 2012-06-09, at 4:07 PM, Jan Kaliszewski wrote:
> I think that BindError proposed in PEP 362 could be a built-in TypeError
> subclass, raised whenever given arguments do not match a given callable:
> 1. while using Signature().bind(...) [as proposed in PEP 362],
> and also
> 2. while using inspect.getcallargs(...)
> and *also*
> 3. while doing *any* call.
> The present behaviour (ad 2. and 3.), i.e. raising TypeError, makes it
> hard to differentiate call-argument-related errors from other TypeError
> Raising BindError (or ArgumentError? the actual name is disputable of
> course), being a TypeError instance, instead -- would made easier
> implementing test suites, RPC mechanisms etc.
That's how it is currently implemented - BindError(TypeError).
I'll mention this in the PEP.
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