[Patches] [ python-Patches-1382087 ] list.count() patch for feature request 1370948

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Patches item #1382087, was opened at 2005-12-15 19:57
Message generated for change (Comment added) made by m_fondo
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Category: Core (C code)
Group: None
Status: Open
>Resolution: Rejected
Priority: 5
Submitted By: Mike Fondo (m_fondo)
Assigned to: Guido van Rossum (gvanrossum)
Summary: list.count() patch for feature request 1370948

Initial Comment:
With patch, list.count() works like list.index() for
start and end parameters

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>Comment By: Mike Fondo (m_fondo)
Date: 2005-12-16 09:04

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With those considerations in mind, I can't disagree. 
Rejecting would be best.

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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-12-15 21:15

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Other than consistency is there a reason for the patch?  I
understand that str.count and list.index both have optional
start/stop arguments, but those both have use cases. 
AFAICT, no real-world use cases have been presented for
list.count with start/stop arguments.  A quick grep of the
standard library does not reveal ANY code that would be
improved as a result of this patch.

The proposal does have some minor disadvantages:  1)
complicating the signature and docs, 2) introducing a
inter-version incompatability, 3) slowing the method call
(changing from METH_O to METH_ARGS).  Unless some offsetting
benefits are shown, this patch should probably not be accepted.

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