8 lines
237 B
Python
8 lines
237 B
Python
import polars as pl
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from hasher import salted_hash_userid
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pl.scan_parquet("regions.parquet").with_columns(
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pl.col("user_id").map_elements(salted_hash_userid, return_dtype=pl.String)
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).collect().write_parquet("regions_pub.parquet")
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