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[3.8] bpo-39031: Fix elif start column offset when there is an else following (GH-17596) #17600

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Merged
merged 1 commit into from
Dec 14, 2019
Merged

[3.8] bpo-39031: Fix elif start column offset when there is an else following (GH-17596) #17600

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9 changes: 9 additions & 0 deletions Lib/test/test_ast.py
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ def to_tuple(t):
"if v:pass",
# If-Elif
"if a:\n pass\nelif b:\n pass",
# If-Elif-Else
"if a:\n pass\nelif b:\n pass\nelse:\n pass",
# With
"with x as y: pass",
"with x as y, z as q: pass",
Expand Down Expand Up @@ -807,6 +809,12 @@ def test_elif_stmt_start_position(self):
self.assertEqual(elif_stmt.lineno, 3)
self.assertEqual(elif_stmt.col_offset, 0)

def test_elif_stmt_start_position_with_else(self):
node = ast.parse('if a:\n pass\nelif b:\n pass\nelse:\n pass\n')
elif_stmt = node.body[0].orelse[0]
self.assertEqual(elif_stmt.lineno, 3)
self.assertEqual(elif_stmt.col_offset, 0)

def test_literal_eval(self):
self.assertEqual(ast.literal_eval('[1, 2, 3]'), [1, 2, 3])
self.assertEqual(ast.literal_eval('{"foo": 42}'), {"foo": 42})
Expand Down Expand Up @@ -1790,6 +1798,7 @@ def main():
('Module', [('While', (1, 0), ('Name', (1, 6), 'v', ('Load',)), [('Pass', (1, 8))], [])], []),
('Module', [('If', (1, 0), ('Name', (1, 3), 'v', ('Load',)), [('Pass', (1, 5))], [])], []),
('Module', [('If', (1, 0), ('Name', (1, 3), 'a', ('Load',)), [('Pass', (2, 2))], [('If', (3, 0), ('Name', (3, 5), 'b', ('Load',)), [('Pass', (4, 2))], [])])], []),
('Module', [('If', (1, 0), ('Name', (1, 3), 'a', ('Load',)), [('Pass', (2, 2))], [('If', (3, 0), ('Name', (3, 5), 'b', ('Load',)), [('Pass', (4, 2))], [('Pass', (6, 2))])])], []),
('Module', [('With', (1, 0), [('withitem', ('Name', (1, 5), 'x', ('Load',)), ('Name', (1, 10), 'y', ('Store',)))], [('Pass', (1, 13))], None)], []),
('Module', [('With', (1, 0), [('withitem', ('Name', (1, 5), 'x', ('Load',)), ('Name', (1, 10), 'y', ('Store',))), ('withitem', ('Name', (1, 13), 'z', ('Load',)), ('Name', (1, 18), 'q', ('Store',)))], [('Pass', (1, 21))], None)], []),
('Module', [('Raise', (1, 0), ('Call', (1, 6), ('Name', (1, 6), 'Exception', ('Load',)), [('Constant', (1, 16), 'string', None)], []), None)], []),
Expand Down
4 changes: 2 additions & 2 deletions Python/ast.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4053,8 +4053,8 @@ ast_for_if_stmt(struct compiling *c, const node *n)

asdl_seq_SET(orelse, 0,
If(expression, suite_seq, suite_seq2,
LINENO(CHILD(n, NCH(n) - 6)),
CHILD(n, NCH(n) - 6)->n_col_offset,
LINENO(CHILD(n, NCH(n) - 7)),
CHILD(n, NCH(n) - 7)->n_col_offset,
end_lineno, end_col_offset, c->c_arena));
/* the just-created orelse handled the last elif */
n_elif--;
Expand Down