polars-hash

Stable non-cryptographic and cryptographic hashing functions for Polars

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Project links

Project description

This plugin provides stable hashing functionality across different polars versions.

Examples

Cryptographic Hashers

import polars
import polars_hash as plh

df = pl.DataFrame({
    "foo":["hello_world"]
})

result = df.select(plh.col('foo').chash.sha256())

print(result)

┌──────────────────────────────────────────────────────────────────┐
│ foo                                                              │
│ ---                                                              │
│ str                                                              │
╞══════════════════════════════════════════════════════════════════╡
│ 35072c1ae546350e0bfa7ab11d49dc6f129e72ccd57ec7eb671225bbd197c8f1 │
└──────────────────────────────────────────────────────────────────┘

Non-cryptographic Hashers

df = pl.DataFrame({
    "foo":["hello_world"]
})

result = df.select(plh.col('foo').nchash.wyhash())
print(result)
┌──────────────────────┐
│ foo                  │
│ ---                  │
│ u64                  │
╞══════════════════════╡
│ 16737367591072095403 │
└──────────────────────┘

Geo Hashers

df = pl.DataFrame(
    {"coord": [{"longitude": -120.6623, "latitude": 35.3003}]},
    schema={
        "coord": pl.Struct(
            [pl.Field("longitude", pl.Float64), pl.Field("latitude", pl.Float64)]
        ),
    },
)

df.with_columns(
    plh.col('coord').geohash.from_coords().alias('geohash')
)
shape: (1, 2)
┌─────────────────────┬────────────┐
│ coord               ┆ geohash    │
│ ---                 ┆ ---        │
│ struct[2]           ┆ str        │
╞═════════════════════╪════════════╡
│ {-120.6623,35.3003} ┆ 9q60y60rhs │
└─────────────────────┴────────────┘


pl.select(pl.lit('9q60y60rhs').geohash.to_coords().alias('coordinates'))
shape: (1, 1)
┌───────────────────────┐
│ coordinates           │
│ ---                   │
│ struct[2]             │
╞═══════════════════════╡
│ {-120.6623,35.300298} │
└───────────────────────┘

Create hash from multiple columns

df = pl.DataFrame({
    "foo":["hello_world"],
    "bar": ["today"]
})

result = df.select(plh.concat_str('foo','bar').chash.sha256())

Project details

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Project links

Release history Release notifications | RSS feed

0.5.0

Nov 1, 2024

0.4.9

Oct 30, 2024

0.4.8

Apr 11, 2024

0.4.7

Mar 24, 2024

0.4.6

Mar 16, 2024

0.4.5

Mar 12, 2024

This version

0.4.4

Mar 11, 2024

0.4.3

Feb 22, 2024

0.4.2

Feb 16, 2024

0.4.1

Feb 2, 2024

0.4.0

Jan 27, 2024

0.3.3

Jan 25, 2024

0.3.2

Jan 17, 2024

0.3.1

Jan 2, 2024

0.3.0

Dec 23, 2023

0.2.4

Dec 23, 2023

0.2.3

Dec 19, 2023

0.2.2

Dec 19, 2023

0.2.1

Dec 18, 2023

0.2.0

Dec 16, 2023

0.1.2

Nov 19, 2023

0.1.1

Nov 1, 2023

0.1.0

Oct 27, 2023

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MD5	`9fd9d46720adc6147f9e1da1f35950d7`
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MD5	`2999f83157dfbaf51cdf9ae360dd8454`
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MD5	`d7edd28d3ce22131f8523c8aa9301307`
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MD5	`9b2566270a4f854637a060afbfa58dde`
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Algorithm	Hash digest
SHA256	`a9b9fe742ec978213499df42023b748e29bc7f8db683c1d98f8369910f3531f1`
MD5	`3be55df2603370ff9b2c37c78aeeb7fa`
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Algorithm	Hash digest
SHA256	`0c4737c9c0c742a8087e63b2156f4a48c9a5197cec33cf232e0ccd7e46815437`
MD5	`1845976e0a6ccfbe8b64ad5b78690337`
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polars-hash 0.4.4

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Cryptographic Hashers

Non-cryptographic Hashers

Geo Hashers

Create hash from multiple columns

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