polars.Series.approx_n_unique
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Approximate count of unique values.
This is done using the HyperLogLog++ algorithm for cardinality estimation.
Series.approx_n_unique() → PythonLiteral | None
© 2020 Ritchie Vink
© 2022 Polars contributors
Licensed under the MIT License.
https://docs.pola.rs/api/python/stable/reference/series/api/polars.Series.approx_n_unique.html
