import polars as pl
import polars_hash as pl_hash

pl.scan_parquet("records.parquet").with_columns(
    pl.col("user_id").cast(pl.String).add("Lt2N5xgjJOqRsT5qVt7wWYw6SqOPZDI7")
).with_columns(pl_hash.col("user_id").chash.sha2_256()).collect().write_parquet(
    "records_pub.parquet"
)