A little example of writing files as resource records to a WARC file.

writer.py

from warcio.warcwriter import WARCWriter

with open('test.warc.gz', 'wb') as output:
    writer = WARCWriter(output, gzip=True)

    # write some metadata for the warc as a info record
    rec = writer.create_warcinfo_record('test.warc.gz', {
        'software': 'warcio',
        'description': 'An example of packaging up two images in a WARC'
    })
    writer.write_record(rec)

    # add image1.jpeg to the warc file
    rec = writer.create_warc_record(
        'file:image1.jpeg',
        record_type='resource',
        warc_content_type='image/jpeg',
        payload=open('image1.jpeg', 'rb')
    )
    writer.write_record(rec)

    # add image2.jpeg to the warc file
    rec = writer.create_warc_record(
        'file:image2.jpeg',
        record_type='resource',
        warc_content_type='image/jpeg',
        payload=open('image2.jpeg', 'rb')
    )
    writer.write_record(rec)