Hello, Previously when using pyarrow 3.0.0 when trying to filter null columns on read_table I was doing it this way: pq.read_table(myparquetFile.parquet', filters=~ds.field(« my_field").is_valid()) It was working fine, but when upgrading top yarrow 4.0.0 I am now receiving an error "ValueError: An Expression cannot be evaluated to python True or False. If you are using the 'and', 'or' or 'not' operators, use '&', '|' or '~' instead. » I tried to use is_null() instead of is_valid() but with no luck either.
Is there some other way to apply this filter? Thank you.
