[GitHub] [arrow] agagrins commented on issue #34739: [Python] Cannot append nullable string columns to table

["agagrins (via GitHub)" <gi...@apache.org>]

agagrins commented on issue #34739:
URL: https://github.com/apache/arrow/issues/34739#issuecomment-1485091246

   Ok, great explanation!
   
   My first thought was then "But what happens if you only have NULL values at the moment?"
   
   The answer is that you can pre-create the chunked array
   ```
   table = table.append_column(pyarrow.field("c", pyarrow.string(), nullable=True), pyarrow.chunked_array([[None]], type=pyarrow.string()))
   ```


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