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<!-- if this PR closes one or more issues, you can automatically link the PR with them by using one of the [*linking keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword), e.g. - this PR should close #xxxx - fixes #xxxx you can also mention related issues, PRs or discussions! --> # Description <!-- Thank you for improving Nushell. Please, check our [contributing guide](../CONTRIBUTING.md) and talk to the core team before making major changes. Description of your pull request goes here. **Provide examples and/or screenshots** if your changes affect the user experience. --> This PR adds a new command that outputs a NuDataFrame or NuLazyFrame in its repr format, which can then be ingested in another polars instance. Advantages of serializing a dataframe in this format are that it can be viewed as a table, carries type information, and can easily be copied to the clipboard. ```nushell # In Nushell > [[a b]; [2025-01-01 2] [2025-01-02 4]] | polars into-df | polars into-lazy | polars into-repr shape: (2, 2) ┌─────────────────────┬─────┐ │ a ┆ b │ │ --- ┆ --- │ │ datetime[ns] ┆ i64 │ ╞═════════════════════╪═════╡ │ 2025-01-01 00:00:00 ┆ 2 │ │ 2025-01-02 00:00:00 ┆ 4 │ └─────────────────────┴─────┘ ``` ```python # In python >>> import polars as pl >>> df = pl.from_repr(""" ... shape: (2, 2) ... ┌─────────────────────┬─────┐ ... │ a ┆ b │ ... │ --- ┆ --- │ ... │ datetime[ns] ┆ i64 │ ... ╞═════════════════════╪═════╡ ... │ 2025-01-01 00:00:00 ┆ 2 │ ... │ 2025-01-02 00:00:00 ┆ 4 │ ... └─────────────────────┴─────┘""") shape: (2, 2) ┌─────────────────────┬─────┐ │ a ┆ b │ │ --- ┆ --- │ │ datetime[ns] ┆ i64 │ ╞═════════════════════╪═════╡ │ 2025-01-01 00:00:00 ┆ 2 │ │ 2025-01-02 00:00:00 ┆ 4 │ └─────────────────────┴─────┘ >>> df.select(pl.col("a").dt.offset_by("12m")) shape: (2, 1) ┌─────────────────────┐ │ a │ │ --- │ │ datetime[ns] │ ╞═════════════════════╡ │ 2025-01-01 00:12:00 │ │ 2025-01-02 00:12:00 │ └─────────────────────┘ ``` # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking changes. --> A new command `polars into-repr` is added. No other commands are impacted by the changes in this PR. # Tests + Formatting <!-- Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass (on Windows make sure to [enable developer mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging)) - `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> Examples were added in the command definition. # After Submitting <!-- If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date. --> |
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|---|---|---|
| .. | ||
| nu_dataframe | ||
| nu_expression | ||
| nu_lazyframe | ||
| nu_lazygroupby | ||
| nu_when | ||
| file_type.rs | ||
| mod.rs | ||
| nu_schema.rs | ||
| utils.rs | ||