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bpo-42246: Mark POP_TOP at end of expression statement as artificial, to conform to PEP 626. by markshannon · Pull Request #24860 · python/cpython · GitHub

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bpo-42246: Mark POP_TOP at end of expression statement as artificial, to conform to PEP 626. #24860

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Merged
markshannon merged 1 commit into from
Mar 15, 2021
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bpo-42246: Mark POP_TOP at end of expression statement as artificial, to conform to PEP 626. #24860

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8 changes: 8 additions & 0 deletions Lib/test/test_compile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -786,6 +786,14 @@ def or_false(x):
self.assertIn('LOAD_', opcodes[0].opname)
self.assertEqual('RETURN_VALUE', opcodes[1].opname)

def test_lineno_procedure_call(self):
def call():
(
print()
)
line1 = call.__code__.co_firstlineno + 1
assert line1 not in [line for (_, _, line) in call.__code__.co_lines()]

def test_lineno_after_implicit_return(self):
TRUE = True
# Don't use constant True or False, as compiler will remove test
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2 changes: 2 additions & 0 deletions Python/compile.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3397,6 +3397,8 @@ compiler_visit_stmt_expr(struct compiler *c, expr_ty value)
}

VISIT(c, expr, value);
/* Mark POP_TOP as artificial */
c->u->u_lineno = -1;
ADDOP(c, POP_TOP);
return 1;
}
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