Prabal-verma

#!/usr/bin/env python3
"""
Download images from a CSV/TSV file containing at least two columns:
 - sample_id: unique identifier for each row
 - image_link: HTTP(S) URL to the image

Images are saved using the sample_id as the filename. The script preserves the
file extension from the URL when possible, otherwise infers from the response's
Content-Type header and defaults to .jpg as a last resort.