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bpo-40618: Disallow invalid targets in augassign and except clauses #20083

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Merged
pablogsal merged 3 commits into from
May 14, 2020
Merged

bpo-40618: Disallow invalid targets in augassign and except clauses #20083

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c611c39
bpo-40618: Disallow invalid targets in augassign and except clauses
lysnikolaou May 14, 2020
1bb434a
Add more tests
lysnikolaou May 14, 2020
8301bb2
Update Lib/test/test_syntax.py
lysnikolaou May 14, 2020
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Add more tests
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@lysnikolaou
lysnikolaou committed May 14, 2020
commit 1bb434aea779e8b0fbf6666e3572ce2547fc93df
5 changes: 4 additions & 1 deletion Lib/test/test_grammar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1279,7 +1279,7 @@ def __getitem__(self, i):
def test_try(self):
### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
### | 'try' ':' suite 'finally' ':' suite
### except_clause: 'except' [expr ['as' expr]]
### except_clause: 'except' [expr ['as' NAME]]
try:
1/0
except ZeroDivisionError:
Expand All @@ -1297,6 +1297,9 @@ def test_try(self):
except (EOFError, TypeError, ZeroDivisionError) as msg: pass
try: pass
finally: pass
with self.assertRaises(SyntaxError):
compile("try:\n pass\nexcept Exception as a.b:\n pass", "?", "exec")
compile("try:\n pass\nexcept Exception as a[b]:\n pass", "?", "exec")

def test_suite(self):
# simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
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10 changes: 10 additions & 0 deletions Lib/test/test_syntax.py
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Expand Up @@ -129,6 +129,16 @@
Traceback (most recent call last):
SyntaxError: cannot assign to conditional expression

>>> a, b += 1, 2
Traceback (most recent call last):
SyntaxError: invalid syntax
>>> (a, b) += 1, 2
Traceback (most recent call last):
SyntaxError: cannot assign to tuple
>>> [a, b] += 1, 2
Traceback (most recent call last):
SyntaxError: cannot assign to list
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lysnikolaou marked this conversation as resolved.

From compiler_complex_args():

>>> def f(None=1):
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