[issue28317] Improve support of FORMAT_VALUE in dis

[Donald Stufft]

Changes by Donald Stufft :


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pull_requests: +1000

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[issue28317] Improve support of FORMAT_VALUE in dis

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue28317] Improve support of FORMAT_VALUE in dis

[Roundup Robot]

Roundup Robot added the comment:

New changeset 5e81d14a52f7 by Serhiy Storchaka in branch '3.6':
Issue #28317: The disassembler now decodes FORMAT_VALUE argument.
https://hg.python.org/cpython/rev/5e81d14a52f7

New changeset 085944763f3a by Serhiy Storchaka in branch 'default':
Issue #28317: The disassembler now decodes FORMAT_VALUE argument.
https://hg.python.org/cpython/rev/085944763f3a

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nosy: +python-dev

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[issue28317] Improve support of FORMAT_VALUE in dis

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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assignee:  -> serhiy.storchaka

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[issue28317] Improve support of FORMAT_VALUE in dis

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

FORMAT_VALUE packs the information about conversion flags and boolean flag that 
denotes whether format specifier is passed on the stack in one integer 
argument. It is not easy to decode this information in disassemble output. 
Proposed patch makes disassembler producing human readable representation of 
FORMAT_VALUE argument.

$ echo 'f"{a} {b:4} {c!r} {d!r:4}"' | ./python -m dis
  1   0 LOAD_NAME0 (a)
  2 FORMAT_VALUE 0
  4 LOAD_CONST   0 (' ')
  6 LOAD_NAME1 (b)
  8 LOAD_CONST   1 ('4')
 10 FORMAT_VALUE 4 (with format)
 12 LOAD_CONST   0 (' ')
 14 LOAD_NAME2 (c)
 16 FORMAT_VALUE 2 (repr)
 18 LOAD_CONST   0 (' ')
 20 LOAD_NAME3 (d)
 22 LOAD_CONST   1 ('4')
 24 FORMAT_VALUE 6 (repr, with format)
 26 BUILD_STRING 7
 28 POP_TOP
 30 LOAD_CONST   2 (None)
 32 RETURN_VALUE

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components: Library (Lib)
files: dis_format_string.patch
keywords: patch
messages: 277754
nosy: eric.smith, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Improve support of FORMAT_VALUE in dis
type: enhancement
versions: Python 3.6, Python 3.7
Added file: http://bugs.python.org/file44892/dis_format_string.patch

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