junrushao1994 commented on a change in pull request #8467:
URL: https://github.com/apache/tvm/pull/8467#discussion_r669872457
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File path: python/tvm/tir/schedule/schedule.py
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@@ -43,7 +43,7 @@ class BlockRV(Object):
"""A random variable that refers to a block"""
-ExprRV = PrimExpr # A random variable that evaluates to an integer
+ExprRV = Union[PrimExpr] # A random variable that evaluates to an integer
Review comment:
It is a workaround for mypy:
https://github.com/python/mypy/issues/7866#issuecomment-549454370
This feature is not supported until python 3.10:
https://docs.python.org/3.10/whatsnew/3.10.html#pep-613-typealias
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