[Python-checkins] r68571 - in python/trunk/Lib: ast.py test/test_ast.py
armin.ronacher
python-checkins at python.org
Tue Jan 13 12:52:23 CET 2009
Author: armin.ronacher
Date: Tue Jan 13 12:52:23 2009
New Revision: 68571
Log:
ast.literal_eval can properly evaluate complex numbers now. This fixes issue4907.
Modified:
python/trunk/Lib/ast.py
python/trunk/Lib/test/test_ast.py
Modified: python/trunk/Lib/ast.py
==============================================================================
--- python/trunk/Lib/ast.py (original)
+++ python/trunk/Lib/ast.py Tue Jan 13 12:52:23 2009
@@ -64,6 +64,18 @@
elif isinstance(node, Name):
if node.id in _safe_names:
return _safe_names[node.id]
+ elif isinstance(node, BinOp) and \
+ isinstance(node.op, (Add, Sub)) and \
+ isinstance(node.right, Num) and \
+ isinstance(node.right.n, complex) and \
+ isinstance(node.left, Num) and \
+ isinstance(node.left.n, (int, long, float)):
+ left = node.left.n
+ right = node.right.n
+ if isinstance(node.op, Add):
+ return left + right
+ else:
+ return left - right
raise ValueError('malformed string')
return _convert(node_or_string)
Modified: python/trunk/Lib/test/test_ast.py
==============================================================================
--- python/trunk/Lib/test/test_ast.py (original)
+++ python/trunk/Lib/test/test_ast.py Tue Jan 13 12:52:23 2009
@@ -271,6 +271,17 @@
self.assertEqual(ast.literal_eval('(True, False, None)'), (True, False, None))
self.assertRaises(ValueError, ast.literal_eval, 'foo()')
+ def test_literal_eval_issue4907(self):
+ self.assertEqual(ast.literal_eval('2j'), 2j)
+ self.assertEqual(ast.literal_eval('10 + 2j'), 10 + 2j)
+ self.assertEqual(ast.literal_eval('1.5 - 2j'), 1.5 - 2j)
+ try:
+ ast.literal_eval('2 + (3 + 4j)')
+ except ValueError:
+ pass
+ else:
+ self.fail('expected value error')
+
def test_main():
test_support.run_unittest(AST_Tests, ASTHelpers_Test)
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