1fanwang commented on code in PR #51163:
URL: https://github.com/apache/arrow/pull/51163#discussion_r4067951883
##########
python/pyarrow/_acero.pyx:
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@@ -594,6 +594,8 @@ cdef class Declaration(_Weakrefable):
CDeclaration c_decl
for decl in decls:
+ if not isinstance(decl, Declaration):
+ raise TypeError("Expected a Declaration")
Review Comment:
Done in
https://github.com/apache/arrow/commit/f317332f653d0b3655bc49c4fbb4b13e425cc698.
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