/usr/lib/python2.7/dist-packages/chameleon/tests/inputs/044-tuple-define.pt is in python-chameleon 2.6.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | <html>
<body tal:define="(a, b) 'a', 'b'">
${a}, ${b}
</body>
</html>
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