nushell/crates
pyz4 4e307480e4
polars: extend NuExpression::extract_exprs to handle records (#15553)
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# Description
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Thank you for improving Nushell. Please, check our [contributing
guide](../CONTRIBUTING.md) and talk to the core team before making major
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Description of your pull request goes here. **Provide examples and/or
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This PR seeks to simplify the syntax for commands that handle a list of
expressions (e.g., `select`, `with-column`, and `agg`) by enabling the
user to replace a list of expressions each aliased with `polars as` to a
single record where the key is the alias for the value. See below for
examples in several contexts.

```nushell
#  Select a column from a dataframe using a record
  > [[a b]; [6 2] [4 2] [2 2]] | polars into-df | polars select {c: ((polars col a) * 2)}
  ╭───┬────╮
  │ # │ c  │
  ├───┼────┤
  │ 0 │ 12 │
  │ 1 │  8 │
  │ 2 │  4 │
  ╰───┴────╯

#  Select a column from a dataframe using a mix of expressions and record of expressions
  > [[a b]; [6 2] [4 2] [2 2]] | polars into-df | polars select a b {c: ((polars col a) * 2)}
  ╭───┬───┬───┬────╮
  │ # │ a │ b │ c  │
  ├───┼───┼───┼────┤
  │ 0 │ 6 │ 2 │ 12 │
  │ 1 │ 4 │ 2 │  8 │
  │ 2 │ 2 │ 2 │  4 │
  ╰───┴───┴───┴────╯

#  Add series to the dataframe using a record
  > [[a b]; [1 2] [3 4]]
    | polars into-lazy
    | polars with-column {
        c: ((polars col a) * 2)
        d: ((polars col a) * 3)
      }
    | polars collect
  ╭───┬───┬───┬───┬───╮
  │ # │ a │ b │ c │ d │
  ├───┼───┼───┼───┼───┤
  │ 0 │ 1 │ 2 │ 2 │ 3 │
  │ 1 │ 3 │ 4 │ 6 │ 9 │
  ╰───┴───┴───┴───┴───╯

#  Group by and perform an aggregation using a record
  > [[a b]; [1 2] [1 4] [2 6] [2 4]]
                | polars into-lazy
                | polars group-by a
                | polars agg {
                    b_min: (polars col b | polars min)
                    b_max: (polars col b | polars max)
                    b_sum: (polars col b | polars sum)
                 }
                | polars collect
                | polars sort-by a
  ╭───┬───┬───────┬───────┬───────╮
  │ # │ a │ b_min │ b_max │ b_sum │
  ├───┼───┼───────┼───────┼───────┤
  │ 0 │ 1 │     2 │     4 │     6 │
  │ 1 │ 2 │     4 │     6 │    10 │
  ╰───┴───┴───────┴───────┴───────╯

```

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
No breaking changes. Users now can use a mix of lists of expressions and
records of expressions where previously only lists of expressions were
accepted (e.g., in `select`, `with-column`, and `agg`).

# Tests + Formatting
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> ```
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Example tests were added to `select`, `with-column`, and `agg`.

# After Submitting
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2025-04-14 16:56:52 -07:00
..
nu_plugin_custom_values Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_example Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_formats Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_gstat Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_inc Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_javascript create nu_plugin_node_example.js (#15482) 2025-04-11 21:18:46 +02:00
nu_plugin_nu_example Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_polars polars: extend NuExpression::extract_exprs to handle records (#15553) 2025-04-14 16:56:52 -07:00
nu_plugin_python Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu_plugin_query bump to the latest rust version (#15483) 2025-04-03 21:08:59 +02:00
nu_plugin_stress_internals Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-cli Substring Match Algorithm (#15511) 2025-04-11 05:15:36 -04:00
nu-cmd-base Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-cmd-extra Replace some PipelineMismatch by OnlySupportsThisInputType by shell error (#15447) 2025-04-07 12:25:27 +02:00
nu-cmd-lang update shadow-rs to version 1 (#15462) 2025-04-03 14:08:51 +02:00
nu-cmd-plugin Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-color-config Rename user-facing 'date' to 'datetime' (#15264) 2025-03-21 13:36:21 -04:00
nu-command chore: move 'job' to experimental category (#15568) 2025-04-14 22:28:16 +02:00
nu-derive-value Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-engine Fix clippy (#15489) 2025-04-06 09:49:28 +08:00
nu-explore Fix clippy (#15489) 2025-04-06 09:49:28 +08:00
nu-glob Remove nu-glob's dependency on nu-protocol (#15349) 2025-03-20 17:32:41 +01:00
nu-json Fix future clippy lints (#15519) 2025-04-08 08:51:12 +08:00
nu-lsp fix(lsp): more accurate command name highlight/rename (#15540) 2025-04-10 06:26:43 -05:00
nu-parser Fix Exbibyte parsing (#15515) 2025-04-07 13:36:23 +02:00
nu-path Fix clippy (#15489) 2025-04-06 09:49:28 +08:00
nu-plugin Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-plugin-core Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-plugin-engine Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-plugin-protocol Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-plugin-test-support Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-pretty-hex Bump to 0.103.1 dev version (#15347) 2025-03-19 00:12:01 -04:00
nu-protocol Bugfix chrono panic + hotifx PR15544 (#15549) 2025-04-11 11:52:42 -05:00
nu-std try to fix datetime-diff for ms, us, ns (#15537) 2025-04-10 06:52:11 -05:00
nu-system Fix future clippy lints (#15519) 2025-04-08 08:51:12 +08:00
nu-table fix f25525b (#15500) 2025-04-11 08:02:01 -05:00
nu-term-grid Fix clippy (#15489) 2025-04-06 09:49:28 +08:00
nu-test-support Remove nu-glob's dependency on nu-protocol (#15349) 2025-03-20 17:32:41 +01:00
nu-utils Substring Match Algorithm (#15511) 2025-04-11 05:15:36 -04:00
nuon Fix to nuon --serialize of closure (#15357) 2025-03-20 17:50:36 +01:00
README.md Remove old nushell/merge engine-q 2022-02-07 14:54:06 -05:00

Nushell core libraries and plugins

These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.

Foundational libraries are split into two kinds of crates:

  • Core crates - those crates that work together to build the Nushell language engine
  • Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.

Plugins are likewise also split into two types:

  • Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
  • Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.