Add Element to the type of delimiter
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`_validate_element` will convert a sting passed to it to a `Token`, so `str` should also be a valid type of the parameter.
The `delimiter` argument of `List` can be either a string or an `Element`, but the type only specifies `str`.
joente
approved these changes
Mar 16, 2023
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The main point of the PR is to allow
delimiterargument ofListto be anElement. At present, if the user wants to use an element as a delimiter, the have to usetyping.cast(or# type: ignore) to avoid a type error.The PR also adds
stras a possible type of the argument to_validate_element.Neither of these should cause any change to the runtime behaviour of the library.