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Boxiang Sun
cython
Commits
804c439c
Commit
804c439c
authored
May 11, 2012
by
Stefan Behnel
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let the parser detect '*a = ...' and provide a helpful error message
parent
0da3fcb6
Changes
2
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2 changed files
with
16 additions
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0 deletions
+16
-0
Cython/Compiler/Parsing.py
Cython/Compiler/Parsing.py
+6
-0
tests/errors/extended_unpacking_notuple.pyx
tests/errors/extended_unpacking_notuple.pyx
+10
-0
No files found.
Cython/Compiler/Parsing.py
View file @
804c439c
...
...
@@ -1073,6 +1073,12 @@ def p_nonlocal_statement(s):
def
p_expression_or_assignment
(
s
):
expr_list
=
[
p_testlist_star_expr
(
s
)]
if
s
.
sy
==
'='
and
expr_list
[
0
].
is_starred
:
# This is a common enough error to make when learning Cython to let
# it fail as early as possible and give a very clear error message.
s
.
error
(
"a starred assignment target must be in a list or tuple"
" - maybe you meant to use an index assignment: var[0] = ..."
,
pos
=
expr_list
[
0
].
pos
)
while
s
.
sy
==
'='
:
s
.
next
()
if
s
.
sy
==
'yield'
:
...
...
tests/errors/extended_unpacking_notuple.pyx
0 → 100644
View file @
804c439c
# mode: error
# very common mistake for new users (handled early by the parser)
def
no_tuple_assignment
():
*
a
=
[
1
]
_ERRORS
=
u"""
6:4: a starred assignment target must be in a list or tuple - maybe you meant to use an index assignment: var[0] = ...
"""
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