[issue21422] int << 0: return the number unmodified

[Arfrever Frehtes Taifersar Arahesis]

Arfrever Frehtes Taifersar Arahesis added the comment:

Use assertIs, since True == 1, but True is not 1.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21422>
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