urllib3 multipart/form-data

gistfile1.txt

import urllib3

r = http.request(
    'POST',
    'https://example.com/createRecord',
    fields={
        'foo': 'bar',
        'your_field': ('filename.tar.gz', open('full/path/filename.tar.gz', 'rb').read())
    })
print(r.data)