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https://github.com/mahmoud/glom
☄️ Python's nested data operator (and CLI), for all your declarative restructuring needs. Got data? Glom it! ☄️
https://github.com/mahmoud/glom
apis cli data data-transformation declarative dictionaries nested-structures python recursion utilities
Last synced: 24 days ago
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☄️ Python's nested data operator (and CLI), for all your declarative restructuring needs. Got data? Glom it! ☄️
- Host: GitHub
- URL: https://github.com/mahmoud/glom
- Owner: mahmoud
- License: other
- Created: 2018-04-18T06:03:24.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2024-01-30T09:45:56.000Z (9 months ago)
- Last Synced: 2024-10-01T19:41:47.305Z (about 1 month ago)
- Topics: apis, cli, data, data-transformation, declarative, dictionaries, nested-structures, python, recursion, utilities
- Language: Python
- Homepage: https://glom.readthedocs.io
- Size: 1.23 MB
- Stars: 1,893
- Watchers: 22
- Forks: 61
- Open Issues: 114
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
- best-of-python - GitHub - 59% open · ⏱️ 12.01.2024): (Data Structures)
- awesome-list - glom - Python's nested data operator (and CLI), for all your declarative restructuring needs. (Data Processing / Data Management)
- project-awesome - mahmoud/glom - ☄️ Python's nested data operator (and CLI), for all your declarative restructuring needs. Got data? Glom it! ☄️ (Python)
README
# glom
*Restructuring data, the Python way*
Real applications have real data, and real data nests. Objects inside
of objects inside of lists of objects.
glom is a new and powerful way to handle real-world data, featuring:
* Path-based access for nested data structures
* Readable, meaningful error messages
* Declarative data transformation, using lightweight, Pythonic specifications
* Built-in data exploration and debugging features
All of that and more, available as a [fully-documented][rtd],
pure-Python package, tested on Python 3.7+, as well as
PyPy3. Installation is as easy as:
```
pip install glom
```
And when you install glom, you also get [the `glom` command-line
interface][cli_rtd], letting you experiment at the console, but never limiting
you to shell scripts:
```
Usage: glom [FLAGS] [spec [target]]
Command-line interface to the glom library, providing nested data access and data
restructuring with the power of Python.
Flags:
--help / -h show this help message and exit
--target-file TARGET_FILE path to target data source (optional)
--target-format TARGET_FORMAT
format of the source data (json, python, toml,
or yaml) (defaults to 'json')
--spec-file SPEC_FILE path to glom spec definition (optional)
--spec-format SPEC_FORMAT format of the glom spec definition (json, python,
python-full) (defaults to 'python')
--indent INDENT number of spaces to indent the result, 0 to disable
pretty-printing (defaults to 2)
--debug interactively debug any errors that come up
--inspect interactively explore the data
```
Anything you can do at the command line readily translates to Python
code, so you've always got a path forward when complexity starts to
ramp up.
## Examples
#### Without glom
```python
>>> data = {'a': {'b': {'c': 'd'}}}
>>> data['a']['b']['c']
'd'
>>> data2 = {'a': {'b': None}}
>>> data2['a']['b']['c']
Traceback (most recent call last):
...
TypeError: 'NoneType' object is not subscriptable
```
#### With glom
```python
>>> glom(data, 'a.b.c')
'd'
>>> glom(data2, 'a.b.c')
Traceback (most recent call last):
...
PathAccessError: could not access 'c', index 2 in path Path('a', 'b', 'c'), got error: ...
```
## Learn more
If all this seems interesting, continue exploring glom below:
* [glom Tutorial][tutorial]
* [Full API documentation at Read the Docs][rtd]
* [Original announcement blog post (2018-05-09)][glom_announce]
* [Frequently Asked Questions][faq]
* [PyCon 2018 Lightning Talk (2018-05-11)][pycon_talk]
All of the links above are overflowing with examples, but should you
find anything about the docs, or glom itself, lacking, [please submit
an issue][gh_issues]!
[rtd]: https://glom.readthedocs.io
[cli_rtd]: http://glom.readthedocs.io/en/latest/cli.html
[tutorial]: https://glom.readthedocs.io/en/latest/tutorial.html
[faq]: https://glom.readthedocs.io/en/latest/faq.html
[glom_announce]: https://sedimental.org/glom_restructured_data.html
[gh_issues]: https://github.com/mahmoud/glom/issues/
[pycon_talk]: https://www.youtube.com/watch?v=bTAFl8P2DkE&t=18m07s
In the meantime, just remember: When you've got nested data, glom it! ☄️