A nifty data processing framework, based on data packages
Project description
#  DataFlows
[](https://travis-ci.org/datahq/dataflows)
[](https://coveralls.io/r/datahq/dataflows?branch=master)
DataFlows is a novel and intuitive way of building data processing flows.
- It's built for medium-data processing - data that fits on your hard drive, but is too big to load in Excel or as-is into Python, and not big enough to require spinning up a Hadoop cluster...
- It's built upon the foundation of the Frictionless Data project - which means that all data prduced by these flows is easily reusable by others.
## QuickStart
Install `dataflows` via `pip install.`
Then use the command-line interface to bootstrap a basic processing script for any remote data file:
```bash
# Install from PyPi
$ pip install dataflows
# Inspect a remote CSV file
$ dataflows init https://raw.githubusercontent.com/datahq/dataflows/master/data/academy.csv
Writing processing code into academy_csv.py
Running academy_csv.py
academy:
# Year Ceremony Award Winner Name Film
(string) (integer) (string) (string) (string) (string)
---- ---------- ----------- -------------------------------- ---------- ------------------------------ -------------------
1 1927/1928 1 Actor Richard Barthelmess The Noose
2 1927/1928 1 Actor 1 Emil Jannings The Last Command
3 1927/1928 1 Actress Louise Dresser A Ship Comes In
4 1927/1928 1 Actress 1 Janet Gaynor 7th Heaven
5 1927/1928 1 Actress Gloria Swanson Sadie Thompson
6 1927/1928 1 Art Direction Rochus Gliese Sunrise
7 1927/1928 1 Art Direction 1 William Cameron Menzies The Dove; Tempest
...
# dataflows create a local package of the data and a reusable processing script which you can tinker with
$ tree
.
├── academy_csv
│ ├── academy.csv
│ └── datapackage.json
└── academy_csv.py
1 directory, 3 files
# Resulting 'Data Package' is super easy to use in Python
[adam] ~/code/budgetkey-apps/budgetkey-app-main-page/tmp (master=) $ python
Python 3.6.1 (default, Mar 27 2017, 00:25:54)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from datapackage import Package
>>> pkg = Package('academy_csv/datapackage.json')
>>> it = pkg.resources[0].iter(keyed=True)
>>> next(it)
{'Year': '1927/1928', 'Ceremony': 1, 'Award': 'Actor', 'Winner': None, 'Name': 'Richard Barthelmess', 'Film': 'The Noose'}
>>> next(it)
{'Year': '1927/1928', 'Ceremony': 1, 'Award': 'Actor', 'Winner': '1', 'Name': 'Emil Jannings', 'Film': 'The Last Command'}
# You now run `academy_csv.py` to repeat the process
# And obviously modify it to add data modification steps
```
## Features
* Trivial to get started and easy to scale up
* Set up and run from command line in seconds ...
* `dataflow init` => `flow.py`
* `python flow.py`
* Validate input (and esp source) quickly (non-zero length, right structure, etc.)
* Supports cache data from source and even between steps
* so that we can run and test quickly (retrieving is slow)
* Immediate test is run: and look at output ...
* Log, debug, rerun
* Degrades to simple python
* Conventions over configuration
* Log exceptions and / or terminate
* The input to each stage is a Data Package or Data Resource (not a previous task)
* Data package based and compatible
* Processors can be a function (or a class) processing row-by-row, resource-by-resource or a full package
* A pre-existing decent contrib library of Readers (Collectors) and Processors and Writers
## Learn more
Dive into the [Tutorial](TUTORIAL.md) to get a deeper glimpse into everything that `dataflows` can do.
Also review this list of [Built-in Processors](PROCESSORS.md), which also includes an API reference for each one of them.
[](https://travis-ci.org/datahq/dataflows)
[](https://coveralls.io/r/datahq/dataflows?branch=master)
DataFlows is a novel and intuitive way of building data processing flows.
- It's built for medium-data processing - data that fits on your hard drive, but is too big to load in Excel or as-is into Python, and not big enough to require spinning up a Hadoop cluster...
- It's built upon the foundation of the Frictionless Data project - which means that all data prduced by these flows is easily reusable by others.
## QuickStart
Install `dataflows` via `pip install.`
Then use the command-line interface to bootstrap a basic processing script for any remote data file:
```bash
# Install from PyPi
$ pip install dataflows
# Inspect a remote CSV file
$ dataflows init https://raw.githubusercontent.com/datahq/dataflows/master/data/academy.csv
Writing processing code into academy_csv.py
Running academy_csv.py
academy:
# Year Ceremony Award Winner Name Film
(string) (integer) (string) (string) (string) (string)
---- ---------- ----------- -------------------------------- ---------- ------------------------------ -------------------
1 1927/1928 1 Actor Richard Barthelmess The Noose
2 1927/1928 1 Actor 1 Emil Jannings The Last Command
3 1927/1928 1 Actress Louise Dresser A Ship Comes In
4 1927/1928 1 Actress 1 Janet Gaynor 7th Heaven
5 1927/1928 1 Actress Gloria Swanson Sadie Thompson
6 1927/1928 1 Art Direction Rochus Gliese Sunrise
7 1927/1928 1 Art Direction 1 William Cameron Menzies The Dove; Tempest
...
# dataflows create a local package of the data and a reusable processing script which you can tinker with
$ tree
.
├── academy_csv
│ ├── academy.csv
│ └── datapackage.json
└── academy_csv.py
1 directory, 3 files
# Resulting 'Data Package' is super easy to use in Python
[adam] ~/code/budgetkey-apps/budgetkey-app-main-page/tmp (master=) $ python
Python 3.6.1 (default, Mar 27 2017, 00:25:54)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from datapackage import Package
>>> pkg = Package('academy_csv/datapackage.json')
>>> it = pkg.resources[0].iter(keyed=True)
>>> next(it)
{'Year': '1927/1928', 'Ceremony': 1, 'Award': 'Actor', 'Winner': None, 'Name': 'Richard Barthelmess', 'Film': 'The Noose'}
>>> next(it)
{'Year': '1927/1928', 'Ceremony': 1, 'Award': 'Actor', 'Winner': '1', 'Name': 'Emil Jannings', 'Film': 'The Last Command'}
# You now run `academy_csv.py` to repeat the process
# And obviously modify it to add data modification steps
```
## Features
* Trivial to get started and easy to scale up
* Set up and run from command line in seconds ...
* `dataflow init` => `flow.py`
* `python flow.py`
* Validate input (and esp source) quickly (non-zero length, right structure, etc.)
* Supports cache data from source and even between steps
* so that we can run and test quickly (retrieving is slow)
* Immediate test is run: and look at output ...
* Log, debug, rerun
* Degrades to simple python
* Conventions over configuration
* Log exceptions and / or terminate
* The input to each stage is a Data Package or Data Resource (not a previous task)
* Data package based and compatible
* Processors can be a function (or a class) processing row-by-row, resource-by-resource or a full package
* A pre-existing decent contrib library of Readers (Collectors) and Processors and Writers
## Learn more
Dive into the [Tutorial](TUTORIAL.md) to get a deeper glimpse into everything that `dataflows` can do.
Also review this list of [Built-in Processors](PROCESSORS.md), which also includes an API reference for each one of them.
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
Source Distribution
dataflows-0.0.32.tar.gz
(26.3 kB
view details)
Built Distribution
File details
Details for the file dataflows-0.0.32.tar.gz.
File metadata
- Download URL: dataflows-0.0.32.tar.gz
- Upload date:
- Size: 26.3 kB
- Tags: Source
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/1.12.1 pkginfo/1.4.2 requests/2.20.0 setuptools/40.5.0 requests-toolbelt/0.8.0 tqdm/4.28.1 CPython/3.7.1
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 086c7df858470a67de65f958433a808c0c2afc4760a3b384ea149af441bef4f2 |
|
| MD5 | 5e441a841ed21249fb642f7370540d9e |
|
| BLAKE2b-256 | 95c4a5bb03799b492e4ebd11a8bec168ccb6a10ed9d594849fe0781e9ab0a669 |
Provenance
File details
Details for the file dataflows-0.0.32-py2.py3-none-any.whl.
File metadata
- Download URL: dataflows-0.0.32-py2.py3-none-any.whl
- Upload date:
- Size: 37.4 kB
- Tags: Python 2, Python 3
- Uploaded using Trusted Publishing? No
- Uploaded via: twine/1.12.1 pkginfo/1.4.2 requests/2.20.0 setuptools/40.5.0 requests-toolbelt/0.8.0 tqdm/4.28.1 CPython/3.7.1
File hashes
| Algorithm | Hash digest | |
|---|---|---|
| SHA256 | 0b9bc73e35360c3ce1f91a126e49fa5d417dc552418b42b1eee757e66ff18e57 |
|
| MD5 | 187a83b56eac9641f8c089c28faebd2b |
|
| BLAKE2b-256 | fa7747cea2a64f6e3bb84fca496b9760de61d8d9f00537c145acb9e524778a01 |
