mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-26 18:29:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

[3.9] bpo-38870: Extend subject of ast.unparse warnings (GH-21053) (GH-21191)

Browse source 
- Mention that some compiler optimizations might not roundtrip
exactly (such as constant tuples and frozensets).

- Add a warning about it might raise RecursionError on very
complex expressions due to the recursive unparsing aspect of ast.unparse
(cherry picked from commit 8df1016)
This commit is contained in:
Pablo Galindo 2020-06-28 02:22:30 +01:00 • committed by GitHub
parent 6803ff28f8
commit 6e39999a24
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Doc/library/ast.rst
View file

@ -1553,7 +1553,12 @@ and classes for traversing abstract syntax trees:
.. warning:: .. warning::
The produced code string will not necessarily be equal to the original The produced code string will not necessarily be equal to the original
code that generated the :class:`ast.AST` object. code that generated the :class:`ast.AST` object (without any compiler
optimizations, such as constant tuples/frozensets).
.. warning::
Trying to unparse a highly complex expression would result with
:exc:`RecursionError`.
.. versionadded:: 3.9 .. versionadded:: 3.9