[ python-Feature Requests-1436243 ] Extend pre-allocated integers to cover [0, 255]

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Feature Requests item #1436243, was opened at 2006-02-21 17:43
Message generated for change (Comment added) made by tjreedy
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Category: None
Group: None
Status: Closed
Resolution: Accepted
Priority: 5
Submitted By: Tim Delaney (tcdelaney)
Assigned to: Georg Brandl (gbrandl)
Summary: Extend pre-allocated integers to cover [0, 255]

Initial Comment:
When the `bytes` object is introduced (successor to 
PEP 332) the full range of byte integer objects [0, 
255] are likely to be used more commonly.

Suggest extending the pre-allocated integer obejcts to 
include the full range [0, 255].

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>Comment By: Terry J. Reedy (tjreedy)
Date: 2006-02-22 13:04

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Thanks for the info.  Small nit: your checkin message says
"RFE #1436243: make integers in [0..256] preallocated. "
The range is actually (now)[-5...256].
#define NSMALLNEGINTS		5
sets the lower limit (unchanged).

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Comment By: Georg Brandl (gbrandl)
Date: 2006-02-22 06:30

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It's test_types, and I added a test too.

Revision 42552.

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Comment By: Terry J. Reedy (tjreedy)
Date: 2006-02-22 01:38

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I decided to test out the new svn view facility ;-)

Looks like 100 in
#define NSMALLPOSINTS		100
in python/trunk/Objects/intobject.c
just needs to be upped to 257

Unlike for other builtin types, I could not find a 
Lib/test/test_int.py file or equivalent where ints are 
tested, to see if pre-allocation is tested.  What did I 
miss?

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Comment By: Raymond Hettinger (rhettinger)
Date: 2006-02-21 17:47

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Georg, would you take care of this one for Py2.5.
Also include the value 256.

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