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give a better error message when deleting ()

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This commit is contained in:
Benjamin Peterson 2009-06-13 17:08:53 +00:00
parent 5d1ff94b9e
commit 52c4bec76b
2 changed files with 13 additions and 4 deletions
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6
Lib/test/test_syntax.py
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@ -462,6 +462,12 @@ Traceback (most recent call last):
File "<doctest test.test_syntax[49]>", line 1 File "<doctest test.test_syntax[49]>", line 1
SyntaxError: keyword argument repeated SyntaxError: keyword argument repeated
>>> del ()
Traceback (most recent call last):
...
File "<doctest test.test_syntax[50]>", line 1
SyntaxError: can't delete ()
""" """
import re import re

11
Python/ast.c
View file

@ -402,10 +402,13 @@ set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n)
s = e->v.List.elts; s = e->v.List.elts;
break; break;
case Tuple_kind: case Tuple_kind:
if (asdl_seq_LEN(e->v.Tuple.elts) == 0) if (asdl_seq_LEN(e->v.Tuple.elts)) {
return ast_error(n, "can't assign to ()"); e->v.Tuple.ctx = ctx;
e->v.Tuple.ctx = ctx; s = e->v.Tuple.elts;
s = e->v.Tuple.elts; }
else {
expr_name = "()";
}
break; break;
case Lambda_kind: case Lambda_kind:
expr_name = "lambda"; expr_name = "lambda";