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| author | Serhiy Storchaka <storchaka@gmail.com> | 2017-11-15 06:49:40 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-11-15 06:49:40 (GMT) |
| commit | 9165f77d5f93a2c12aa0e90853e3ae7212800d3c (patch) | |
| tree | 96b831acd89b33f865d0be34bdbf5b7431c780c0 /Doc | |
| parent | 3bda02222aa3783bf85fc3ff8bc042aefd9c4fd3 (diff) | |
| download | cpython-9165f77d5f93a2c12aa0e90853e3ae7212800d3c.zip cpython-9165f77d5f93a2c12aa0e90853e3ae7212800d3c.tar.gz cpython-9165f77d5f93a2c12aa0e90853e3ae7212800d3c.tar.bz2 | |
bpo-32012: Disallow trailing comma after genexpr without parenthesis. (#4382)
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/whatsnew/3.7.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst index f6d051d..82b4840 100644 --- a/Doc/whatsnew/3.7.rst +++ b/Doc/whatsnew/3.7.rst @@ -630,6 +630,20 @@ This section lists previously described changes and other bugfixes that may require changes to your code. +Changes in Python behavior +-------------------------- + +* Due to an oversight, earlier Python versions erroneously accepted the + following syntax:: + + f(1 for x in [1],) + + Python 3.7 now correctly raises a :exc:`SyntaxError`, as a generator + expression always needs to be directly inside a set of parentheses + and cannot have a comma on either side. + (Contributed by Serhiy Storchaka in :issue:`32012`.) + + Changes in the Python API ------------------------- |