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authorLysandros Nikolaou <lisandrosnik@gmail.com>2020-05-07 13:44:06 +0300
committerGitHub <noreply@github.com>2020-05-07 11:44:06 +0100
commit4638c6429575bd6de26b12b2af5df74d6568b553 (patch)
treedb027fceca158090caf8f194fc577d6631f82daa /Lib/test/test_peg_parser.py
parent2f37c355ab0e9ec9c1753985d27c41fa0bd719b9 (diff)
downloadcpython-git-4638c6429575bd6de26b12b2af5df74d6568b553.tar.gz
bpo-40334: Error message for invalid default args in function call (GH-19973)
When parsing something like `f(g()=2)`, where the name of a default arg is not a NAME, but an arbitrary expression, a specialised error message is emitted.
Diffstat (limited to 'Lib/test/test_peg_parser.py')
-rw-r--r--Lib/test/test_peg_parser.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/test/test_peg_parser.py b/Lib/test/test_peg_parser.py
index d6939fdbf6..df2d46d882 100644
--- a/Lib/test/test_peg_parser.py
+++ b/Lib/test/test_peg_parser.py
@@ -609,6 +609,9 @@ FAIL_SPECIALIZED_MESSAGE_CASES = [
("lambda *: pass", "named arguments must follow bare *"),
("lambda *,: pass", "named arguments must follow bare *"),
("lambda *, **a: pass", "named arguments must follow bare *"),
+ ("f(g()=2", "expression cannot contain assignment, perhaps you meant \"==\"?"),
+ ("f(a, b, *c, d.e=2", "expression cannot contain assignment, perhaps you meant \"==\"?"),
+ ("f(*a, **b, c=0, d[1]=3)", "expression cannot contain assignment, perhaps you meant \"==\"?"),
]
GOOD_BUT_FAIL_TEST_CASES = [