[Python-Dev] PEP 362: 4th edition (original) (raw)

Yury Selivanov yselivanov.ml at gmail.com
Tue Jun 19 04:35:06 CEST 2012

On 2012-06-18, at 10:06 PM, Nick Coghlan wrote:

On Tue, Jun 19, 2012 at 12:00 PM, Yury Selivanov <yselivanov.ml at gmail.com> wrote:

On 2012-06-18, at 9:36 PM, Nick Coghlan wrote:

So keep the current copying semantics for Signature objects (i.e. creating new copies of the Parameter objects as well), but call it a shallow copy rather than a deep copy. Make it clear in the documentation that any defaults and annotations are still shared with the underlying callable.

So, 'Signature.deepcopy()' -> 'Signature.shallowcopy()'? Or make it private - 'Signature.shallowcopy()'? I'd just call it Signature.copy :) You're not doing anything unusual here, just declaring that the list of parameters is a part of the Signature object's state, and thus even a shallow copy shouldn't share the parameter objects.

OK, done ;)

BTW, http://bugs.python.org/issue15008 has the latest implementation attached (if anybody wants to play with it)

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