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Convert between a Table and a dict[str, list[Any]] #197

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lars-reimann opened this issue Apr 17, 2023 · 1 comment · Fixed by #198
Closed

Convert between a Table and a dict[str, list[Any]] #197

lars-reimann opened this issue Apr 17, 2023 · 1 comment · Fixed by #198
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enhancement 💡 New feature or request released Included in a release

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lars-reimann commented Apr 17, 2023 •
edited

Is your feature request related to a problem?

The easiest way to create a Table by hand (e.g. for tests) right now is to use the from_columns methods:

Table.from_columns(
    [
        Column("a", [1,2]),
        Column("b", [3,4]),
    ]
)

This is still quite verbose.

Desired solution

  • Add a new method Table.from_dict that can construct a Table like this:
Table.from_dict(
    {
        "a": [1,2],
        "b": [3,4],
    }
)

The passed dict maps column names to values.

  • Add a new method Table.to_dict that returns a dict mapping columns names to values.

Possible alternatives (optional)

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@lars-reimann lars-reimann added the enhancement 💡 New feature or request label Apr 17, 2023
@lars-reimann lars-reimann changed the title Construct a Table from a dict / create a dict from a Table Convert between a Table and a dict Apr 17, 2023
@lars-reimann lars-reimann changed the title Convert between a Table and a dict Convert between a Table and a dict[str, Any] Apr 17, 2023
@lars-reimann lars-reimann self-assigned this Apr 17, 2023
@lars-reimann lars-reimann changed the title Convert between a Table and a dict[str, Any] Convert between a Table and a dict[str, list[Any]] Apr 17, 2023
@lars-reimann lars-reimann mentioned this issue Apr 17, 2023
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@lars-reimann lars-reimann linked a pull request Apr 17, 2023 that will close this issue
feat: convert between a dict and a Table #198
Merged
lars-reimann added a commit that referenced this issue Apr 17, 2023
@lars-reimann @megalinter-bot
feat: convert between a dict and a Table (#198)
2a5089e 
Closes #197.

### Summary of Changes

Added two new methods to `Table`:
* `from_dict` can create a `Table` from a `dict`
* `to_dict` can convert a `Table` to a `dict`

---------

Co-authored-by: megalinter-bot <129584137+megalinter-bot@users.noreply.github.com>
lars-reimann pushed a commit that referenced this issue Apr 21, 2023
@semantic-release-bot
chore(release): 0.11.0 [skip ci]
9509d3d 
## [0.11.0](v0.10.0...v0.11.0) (2023-04-21)

### Features

* `OneHotEncoder.inverse_transform` now maintains the column order from the original table ([#195](#195)) ([3ec0041](3ec0041)), closes [#109](#109) [#109](#109)
* add `plot_` prefix back to plotting methods ([#212](#212)) ([e50c3b0](e50c3b0)), closes [#211](#211)
* adjust `Column`, `Schema` and `Table` to changes in `Row` ([#216](#216)) ([ca3eebb](ca3eebb))
* back `Row` by a `polars.DataFrame` ([#214](#214)) ([62ca34d](62ca34d)), closes [#196](#196) [#149](#149)
* clean up `Row` class ([#215](#215)) ([b12fc68](b12fc68))
* convert between `Row` and `dict` ([#206](#206)) ([e98b653](e98b653)), closes [#204](#204)
* convert between a `dict` and a `Table` ([#198](#198)) ([2a5089e](2a5089e)), closes [#197](#197)
* create column types for `polars` data types ([#208](#208)) ([e18b362](e18b362)), closes [#196](#196)
* dataframe interchange protocol ([#200](#200)) ([bea976a](bea976a)), closes [#199](#199)
* move existing ML solutions into `safeds.ml.classical` package ([#213](#213)) ([655f07f](655f07f)), closes [#210](#210)

### Bug Fixes

* `table.keep_only_columns` now maps column names to correct data ([#194](#194)) ([459ab75](459ab75)), closes [#115](#115)
* typo in type hint ([#184](#184)) ([e79727d](e79727d)), closes [#180](#180)
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🎉 This issue has been resolved in version 0.11.0 🎉

The release is available on:

Your semantic-release bot 📦🚀

@lars-reimann lars-reimann added the released Included in a release label Apr 21, 2023
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feat: convert between a dict and a Table Safe-DS/Library
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