Comments (1)
aldanor
commented on August 28, 2024
It's not really a pyo3-polars problem.
Everything is zero-copy indeed... until you start mutating things like you try to.
In general, you want to avoid doing a[0, 'A'] = 5 since it may result in copying the entire 'A' column.
// See PySeries::set_at_idx().
To have in/out-mutable array data on both Rust/Python sides, you can use numpy wrappers if that fits the use case.
from pyo3-polars.
Related Issues (20)
- Minimal plugin may segfault HOT 2
- Sorted flag not preserved when returning the PyDataFrame to Rust
- Allow to set expression output type based on kwargs HOT 2
- cannot find -lpython3.10: No such file or directory HOT 1
- Kernel panics when passing list(categorical) as input
- Support for Using Polars Extension with `over` Syntax HOT 1
- How to pass kwarg to func output type HOT 4
- plugins' names not respected? HOT 3
- Namespace API for DataFrame/LazyFrame
- Polars 0.26 rc1: plugins panic when passing String input HOT 2
- `ArrowInvalid` when return a `PyDataFrame` to python HOT 2
- LazyFrame::anonymous_scan can't be send to python HOT 1
- Pluggin list
- The first call to pyfunction returning PyDataFrame is slow HOT 3
- Please add examples of passing dataframes between python and rust HOT 1
- Allow for custom datasources as plugins HOT 10
- Template repository for pyo3-polars
- Upgrade to PyO3 0.21.1 HOT 2
- Maintain input series names, in rust, when a plugin is called within .over() context HOT 4
- Upgrade pyo3-polars and friends to PyO3 0.21 and its new Bound<> APIs
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from pyo3-polars.