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How do I fix this Python typing error? `daft/expressions/expressions.py:272: *error:* Function "daft.expressions.expressions.Expression.str" is not valid as a type  [valid-type]`
The line in question: `def to_struct(*inputs: Expression | str) -&gt; Expression:`

I think older python versions don't support `|` to union types

Commit hook still fails, and with a new error saying to use `|` instead

oh did you import `Expression.str` by accident

Oh that could be it, I’m in `expressions.py`

because the `str` name is overridden in that file