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Posted to github@arrow.apache.org by "paleolimbot (via GitHub)" <gi...@apache.org> on 2025/10/22 04:34:29 UTC
[PR] feat(r): Add reticulate/Python integration [arrow-nanoarrow]
paleolimbot opened a new pull request, #817:
URL: https://github.com/apache/arrow-nanoarrow/pull/817
This PR adds the s3 generics required to interact with Python objects via reticulate. Thie relies on nanoarrow for Python, which also exposes primitives for interacting with capsules. In theory we wouldn't need nanoarrow for Python for the Python -> R case if we could create and consume PyCapsules but this is at least a good start!
``` r
library(nanoarrow)
library(reticulate)
pa <- import("pyarrow", convert = FALSE)
x <- pa$array(c(1, 2, 3))
(array <- as_nanoarrow_array(x))
#> <nanoarrow_array double[3]>
#> $ length : int 3
#> $ null_count: int 0
#> $ offset : int 0
#> $ buffers :List of 2
#> ..$ :<nanoarrow_buffer validity<bool>[null] ``
#> ..$ :<nanoarrow_buffer data<double>[3][24 b]> `1 2 3`
#> $ dictionary: NULL
#> $ children : list()
(py_array <- r_to_py(array))
#> nanoarrow.Array<double>[3]
#> 1.0
#> 2.0
#> 3.0
py_to_r(py_array)
#> <nanoarrow_array double[3]>
#> $ length : int 3
#> $ null_count: int 0
#> $ offset : int 0
#> $ buffers :List of 2
#> ..$ :<nanoarrow_buffer validity<bool>[null] ``
#> ..$ :<nanoarrow_buffer data<double>[3][24 b]> `1 2 3`
#> $ dictionary: NULL
#> $ children : list()
```
Closes #810.
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Re: [PR] feat(r): Add reticulate/Python integration [arrow-nanoarrow]
Posted by "paleolimbot (via GitHub)" <gi...@apache.org>.
paleolimbot commented on PR #817:
URL: https://github.com/apache/arrow-nanoarrow/pull/817#issuecomment-3438374804
If there are no objections I'll merge later today!
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Re: [PR] feat(r): Add reticulate/Python integration [arrow-nanoarrow]
Posted by "paleolimbot (via GitHub)" <gi...@apache.org>.
paleolimbot merged PR #817:
URL: https://github.com/apache/arrow-nanoarrow/pull/817
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