Yury Selivanov added the comment:
> Yury, can you help me understand why `hasattr("foo", "bar")` triggers the
> infinite loop there, but not `print("foo")`?
hasattr uses getattr under the hood. getattr raises an AttributeError, and that
triggers PyErr_SetError, which has an infinite "while" loop. Instead of
"hasattr" you can use anything that raises an error.
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<http://bugs.python.org/issue25779>
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