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bpo-32911: Remove the docstring attribute of AST types #7121

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Merged
merged 4 commits into from
May 29, 2018
Merged

bpo-32911: Remove the docstring attribute of AST types #7121

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881d59e
Import initial Inada's PR 5927.
serhiy-storchaka May 25, 2018
8ee9227
Remove the DocString AST type.
serhiy-storchaka May 25, 2018
eba9f13
Add a news entry and bump a magic number.
serhiy-storchaka May 28, 2018
4d05ad7
Fix wording.
serhiy-storchaka May 29, 2018
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Add a news entry and bump a magic number.
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@serhiy-storchaka
serhiy-storchaka committed May 28, 2018
commit eba9f13128816c8fea9a90365466ca383ea3ee38
4 changes: 3 additions & 1 deletion Lib/importlib/_bootstrap_external.py
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Expand Up @@ -246,6 +246,8 @@ def _write_atomic(path, data, mode=0o666):
# Python 3.7a2 3391 (update GET_AITER #31709)
# Python 3.7a4 3392 (PEP 552: Deterministic pycs #31650)
# Python 3.7b1 3393 (remove STORE_ANNOTATION opcode #32550)
# Python 3.7rc1 3394 (restored docstring as the firts stmt in the body;
# this might affected the first line number #32911)
#
# MAGIC must change whenever the bytecode emitted by the compiler may no
# longer be understood by older implementations of the eval loop (usually
Expand All @@ -254,7 +256,7 @@ def _write_atomic(path, data, mode=0o666):
# Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
# in PC/launcher.c must also be updated.

MAGIC_NUMBER = (3393).to_bytes(2, 'little') + b'\r\n'
MAGIC_NUMBER = (3394).to_bytes(2, 'little') + b'\r\n'
_RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little') # For import.c

_PYCACHE = '__pycache__'
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4 changes: 4 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2018-02-27-20-57-00.bpo-32911.cmKfco.rst
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@@ -0,0 +1,4 @@
Reverted :issue:`29463`. ``docstring`` field is removed from Module, ClassDef,
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We should say why we are doing this. Perhaps start the entry with:
"Due to unexpected compatibility issues discovered during downstream beta testing, reverted ... "

FunctionDef, and AsyncFunctionDef ast nodes which is added in 3.7a1. Docstring
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"which was added"

expression is restored as a first statement in their body. Based on patch by
Inada Naoki.
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