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bpo-40334: Correctly identify invalid target in assignment errors #20076

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Merged
pablogsal merged 9 commits into from
May 15, 2020
Merged

bpo-40334: Correctly identify invalid target in assignment errors #20076

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445c7fd
bpo-40334: Correctly identify invalid target in assignment errors
pablogsal May 13, 2020
d385c29
Update Grammar/python.gram
pablogsal May 13, 2020
b596bba
Deduplicate code with macro
pablogsal May 14, 2020
4f2cb72
Fix error for augassign
pablogsal May 14, 2020
c74ecce
Address Lysandros's feedback
pablogsal May 15, 2020
6d1d63c
Add quotes around the node type
pablogsal May 15, 2020
00a2205
Update test_dictcomps, test_genexps and test_generators
pablogsal May 15, 2020
349ea59
Update some tests to the new errors
pablogsal May 15, 2020
6a5c4ed
Add a comment explaining why we only visit Tuples and Lists
pablogsal May 15, 2020
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Update some tests to the new errors
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@pablogsal
pablogsal committed May 15, 2020
commit 349ea59b84f34d5ad3af3c23cfe4876e8d4d6443
2 changes: 1 addition & 1 deletion Lib/test/test_generators.py
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Expand Up @@ -1921,7 +1921,7 @@ def printsolution(self, x):
>>> def f(): (yield bar) += y
Traceback (most recent call last):
...
SyntaxError: yield expression is an illegal expression for augmented assignment
SyntaxError: 'yield expression' is an illegal expression for augmented assignment


Now check some throw() conditions:
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2 changes: 1 addition & 1 deletion Lib/test/test_genexps.py
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Expand Up @@ -158,7 +158,7 @@
>>> (y for y in (1,2)) += 10
Traceback (most recent call last):
...
SyntaxError: generator expression is an illegal expression for augmented assignment
SyntaxError: 'generator expression' is an illegal expression for augmented assignment


########### Tests borrowed from or inspired by test_generators.py ############
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2 changes: 1 addition & 1 deletion Lib/test/test_peg_parser.py
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Expand Up @@ -625,7 +625,7 @@ def f():
("(a, b): int", "only single target (not tuple) can be annotated"),
("[a, b]: int", "only single target (not list) can be annotated"),
("a(): int", "illegal target for annotation"),
("1 += 1", "cannot assign to literal"),
("1 += 1", "'literal' is an illegal expression for augmented assignment"),
("pass\n pass", "unexpected indent"),
("def f():\npass", "expected an indented block"),
("def f(*): pass", "named arguments must follow bare *"),
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