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Title: Make '%F' and float.__format__('F') convert results to upper case.
Type: enhancement Stage: resolved
Components: Interpreter Core Versions: Python 3.1, Python 2.7
Status: closed Resolution: accepted
Dependencies: Superseder:
Assigned To: eric.smith Nosy List: eric.smith, mark.dickinson
Priority: normal Keywords: easy, patch

Created on 2008-07-16 18:28 by eric.smith, last changed 2022-04-11 14:56 by admin. This issue is now closed.

File name Uploaded Description Edit
issue3382_trunk.patch mark.dickinson, 2009-11-29 10:38
issue3382_trunk-1.patch eric.smith, 2009-11-29 17:06
Messages (12)
msg69811 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2008-07-16 18:28
for the discussion.  Basically, 'F' did the same as 'f' because it was
assumed that neither would ever produce an exponent.  But they do, for
numbers greater than about 1e50.  Also, 'F' should produce 'NAN' for
cases where 'f' produces 'nan'.
msg69897 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2008-07-17 18:35
Implemented for trunk in r65069; for py3k in r65073.
msg69901 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2008-07-17 19:21
Changes backed out, pending fixing on Windows.
msg71945 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2008-08-25 17:28
Unfortunately, I missed the window to get these into 3.0 and 2.6. 
Better luck for 3.1 and 2.7!
msg86838 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-04-30 01:13
If is implemented, then this issue
really just becomes making sure NAN and INF are uppercase.
msg87092 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-05-04 00:58
With the implementation of issue5859 (py3k only), the only case where
this matters in NAN and INF. I'm going to address those in 3.1, and not
make any change for 2.x.
msg87330 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-05-06 13:16
Checked in to py3k in 72398. I'm reconsidering whether to make this
change in 2.7. I might make the change there, I'll have to check on the
msg95802 - (view) Author: Mark Dickinson (mark.dickinson) * (Python committer) Date: 2009-11-29 10:38
Eric, any further thoughts about making this change in 2.7?  Here's a 
patch that does it (I think).
msg95805 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-11-29 14:15
Thanks for looking at this, Mark.

Your patch looks okay to me, but Objects/stringlib/formatter.h still has
some 'F' -> 'f' logic in it, although it turns out that it's wrong:

#if PY_VERSION_HEX < 0x0301000
    /* 'F' is the same as 'f', per the PEP */
    /* This is no longer the case in 3.x */
    if (type == 'F')
        type = 'f';

Note that it's missing a zero on the end, so this code is never (and I
guess never was) executed. I'll remove it and add a test.

It also looks like complex is still mapping 'F' to 'f'. I'll fix that,
too, and add a test for it.

Thanks again.
msg95807 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-11-29 17:06
Here's a patch which adds some tests and fixes complex.

I'm currently testing with PY_NO_SHORT_FLOAT_REPR on Windows. If that's
okay, and if you don't have any objections, I'll commit this. While I'm
at it I'll modify Objects/stringlib/formatter.h in py3k to keep them it
sync with trunk.
msg95808 - (view) Author: Mark Dickinson (mark.dickinson) * (Python committer) Date: 2009-11-29 17:12
Looks good to me.
msg95810 - (view) Author: Eric V. Smith (eric.smith) * (Python committer) Date: 2009-11-29 17:41
Committed (with a few more tests) in r76583.
Date User Action Args
2022-04-11 14:56:36adminsetgithub: 47632
2009-11-29 17:41:25eric.smithsetstatus: open -> closed
resolution: accepted
messages: + msg95810

stage: resolved
2009-11-29 17:12:13mark.dickinsonsetmessages: + msg95808
2009-11-29 17:07:08eric.smithsetversions: + Python 2.7
2009-11-29 17:06:56eric.smithsetfiles: + issue3382_trunk-1.patch

messages: + msg95807
2009-11-29 14:15:04eric.smithsetmessages: + msg95805
2009-11-29 10:38:58mark.dickinsonsetfiles: + issue3382_trunk.patch
keywords: + patch
messages: + msg95802
2009-05-06 13:16:24eric.smithsetmessages: + msg87330
2009-05-04 00:58:45eric.smithsetmessages: + msg87092
versions: - Python 2.7
2009-04-30 01:13:37eric.smithsetmessages: + msg86838
2009-04-12 16:26:22eric.smithsetnosy: + mark.dickinson
2008-08-25 17:28:45eric.smithsetmessages: + msg71945
versions: + Python 3.1, Python 2.7, - Python 2.6, Python 3.0
2008-07-17 19:21:37eric.smithsetstatus: closed -> open
resolution: accepted -> (no value)
messages: + msg69901
2008-07-17 18:35:24eric.smithsetstatus: open -> closed
resolution: accepted
messages: + msg69897
2008-07-16 18:28:14eric.smithcreate