https://github.com/simonw/flatten-single-item-arrays

Given a JSON list of objects, flatten any keys which always contain single item arrays to just a single value
https://github.com/simonw/flatten-single-item-arrays

airtable-api json

Last synced: about 1 year ago
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Given a JSON list of objects, flatten any keys which always contain single item arrays to just a single value

• Host: GitHub
• URL: https://github.com/simonw/flatten-single-item-arrays
• Owner: simonw
• License: apache-2.0
• Created: 2021-02-25T14:49:14.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2021-02-25T14:50:42.000Z (over 5 years ago)
• Last Synced: 2024-10-18T07:53:30.992Z (over 1 year ago)
• Topics: airtable-api, json
• Language: Python
• Homepage:
• Size: 7.81 KB
• Stars: 4
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# flatten-single-item-arrays

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Given a JSON list of objects, flatten any keys which always contain single item arrays to just a single value

## Installation

Install this tool using `pip`:

    $ pip install flatten-single-item-arrays

## Usage

This will output the rewritten JSON:

    $ flatten-single-item-arrays input.json

You can save it to a file like this:

    $ flatten-single-item-arrays input.json > output.json

Use `--debug` to see extra debugging information displayed on standard error:

    $ flatten-single-item-arrays input.json --debug > output.json

    Item count: 2

    count_of_single_item_lists

    {

        "foo": 2

    }

    count_of_present_keys

    {

        "foo": 2,

        "bar": 2

    }

    keys_to_reformat:

    - foo

## What this does

This tool accepts the path to a JSON file and outputs a modified version of that JSON file where any keys that are *always* single item lists are rewritten to a single value.

For example, the following input:

```json

[

    {

        "foo": [

            "bar"

        ],

        "bar": 5

    },

    {

        "foo": [

            "baz"

        ],

        "bar": 6

    }

]

```

Will be transformed to this:

```json

[

    {

        "foo": "bar",

        "bar": 5

    },

    {

        "foo": "baz",

        "bar": 6

    }

]

```

I built this to help work with data from the Airtable API, which often contains this single-item-list pattern.

## Development

To contribute to this tool, first checkout the code. Then create a new virtual environment:

    cd flatten-single-item-arrays

    python -mvenv venv

    source venv/bin/activate

Or if you are using `pipenv`:

    pipenv shell

Now install the dependencies and tests:

    pip install -e '.[test]'

To run the tests:

    pytest