def test_invalid_syntax(self):
invalid_expressions = [
'x>1', '(n>1', 'n>1)', '42**42**42', '0xa', '1.0', '1e2',
'n>0x1', '+n', '-n', 'n()', 'n(1)', '1+', 'nn', 'n n',
]
for expr in invalid_expressions:
with self.assertRaises(ValueError):
gettext.c2py(expr)
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