Implementation:DistrictDataLabs Yellowbrick Dataset Download

Knowledge Sources	DistrictDataLabs_Yellowbrick
Domains	Datasets, Utilities
Last Updated	2026-02-08 05:00 GMT

Overview

Utility function for downloading, verifying, and extracting Yellowbrick example datasets from a hosted store.

Description

The download_data function downloads a zipped dataset from a URL, verifies its SHA256 signature against the expected hash, and extracts the archive to the data home directory. It supports incremental downloading and skips re-download if the dataset already exists (unless replace=True).

Usage

Import this function when building custom dataset loading pipelines or when you need programmatic control over dataset downloads. Most users will use download_all() from yellowbrick.download instead.

Code Reference

Source Location

• Repository: DistrictDataLabs_Yellowbrick
• File: yellowbrick/datasets/download.py
• Lines: 1-110

Signature

def download_data(url, signature, data_home=None, replace=False, extract=True):
    """Downloads zipped dataset, verifies signature, and extracts archive."""

Import

from yellowbrick.datasets.download import download_data

I/O Contract

Inputs

Name	Type	Required	Description
url	str	Yes	URL to download dataset zip from
signature	str	Yes	Expected SHA256 hash of the zip
data_home	str	No	Local directory for datasets
replace	bool	No	Re-download even if exists (default: False)
extract	bool	No	Extract the zip (default: True)

Outputs

Name	Type	Description
(side effect)	Files	Downloaded and extracted dataset on disk

Usage Examples

from yellowbrick.datasets.download import download_data

download_data(
    url="https://s3.amazonaws.com/ddl-data-lake/yellowbrick/v1.0/mushroom.zip",
    signature="abc123...",
    data_home="~/.yellowbrick",
)

Related Pages

• Environment:DistrictDataLabs_Yellowbrick_Python_Scikit_Learn_Environment