Add a helper function for narrowing list[Expression] to list[StrExpr]
#14877
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JelleZijlstra
approved these changes
Mar 11, 2023
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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There are several places in the code base where we need to narrow
list[Expression]->list[StrExpr]. Currently we do this usingcasts, butTypeGuards are arguably a much more idiomatic way to do this kind of operation nowadays.