danepitkin commented on code in PR #43729:
URL: https://github.com/apache/arrow/pull/43729#discussion_r1725157645
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python/pyarrow/lib.pxd:
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@@ -519,6 +519,7 @@ cdef class Table(_Tabular):
CTable* table
cdef void init(self, const shared_ptr[CTable]& table)
+ cdef void _assert_cpu(self) except *
Review Comment:
I thought so too, but I get a runtime error if I leave it out. Since its a
`cdef` function, cython adds it to a vtable for that class. I guess Cython
needs the parent class to have an explicitly defined vtable entry?
```
> self._assert_cpu()
E AttributeError: 'pyarrow.lib.RecordBatch' object has no attribute
'_assert_cpu'
```
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