A Distributed DataFrame library for large scale complex data processing.
Project description
Website • Docs • Installation • 10-minute tour of Daft • Community and Support
Daft: the distributed Python dataframe for complex data
Daft is a fast, Pythonic and scalable open-source dataframe library built for Python and Machine Learning workloads.
Daft is currently in its Alpha release phase - please expect bugs and rapid improvements to the project. We welcome user feedback/feature requests in our Discussions forums
Table of Contents
About Daft
The Daft dataframe is a table of data with rows and columns. Columns can contain any Python objects, which allows Daft to support rich complex data types such as images, audio, video and more.
Any Data: Columns can contain any Python objects, which means that the Python libraries you already use for running machine learning or custom data processing will work natively with Daft!
Notebook Computing: Daft is built for the interactive developer experience on a notebook - intelligent caching/query optimizations accelerates your experimentation and data exploration.
Distributed Computing: Rich complex formats such as images can quickly outgrow your local laptop’s computational resources - Daft integrates natively with Ray for running dataframes on large clusters of machines with thousands of CPUs/GPUs.
Getting Started
Installation
Install Daft with pip install getdaft.
For more advanced installations (e.g. installing from source or with extra dependencies such as Ray and AWS utilities), please see our Installation Guide
Quickstart
Check out our 10-minute quickstart!
In this example, we load images from an AWS S3 bucket and run a simple function to generate thumbnails for each image:
import daft as daft
import io
from PIL import Image
def get_thumbnail(img: Image.Image) -> Image.Image:
"""Simple function to make an image thumbnail"""
imgcopy = img.copy()
imgcopy.thumbnail((48, 48))
return imgcopy
# Load a dataframe from files in an S3 bucket
df = daft.from_glob_path("s3://daft-public-data/laion-sample-images/*")
# Get the AWS S3 url of each image
df = df.select(df["path"].alias("s3_url"))
# Download images and load as a PIL Image object
df = df.with_column("image", df["s3_url"].url.download().apply(lambda data: Image.open(io.BytesIO(data)), return_dtype=daft.DataType.python()))
# Generate thumbnails from images
df = df.with_column("thumbnail", df["image"].apply(get_thumbnail, return_dtype=daft.DataType.python()))
df.show(3)
More Resources
10-minute tour of Daft - learn more about Daft’s full range of capabilities including dataloading from URLs, joins, user-defined functions (UDF), groupby, aggregations and more.
User Guide - take a deep-dive into each topic within Daft
API Reference - API reference for public classes/functions of Daft
Contributing
To start contributing to Daft, please read CONTRIBUTING.md
Telemetry
To help improve Daft, we collect non-identifiable data.
To disable this behavior, set the following environment variable: DAFT_ANALYTICS_ENABLED=0
The data that we collect is:
Non-identifiable: events are keyed by a session ID which is generated on import of Daft
Metadata-only: we do not collect any of our users’ proprietary code or data
For development only: we do not buy or sell any user data
Please see our documentation for more details.
License
Daft has an Apache 2.0 license - please see the LICENSE file.
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