download.py

import requests
#http://docs.python-requests.org/en/latest/

def downloader(url,file):
    with open(file,'wb') as f:
        request = requests.get(url, stream=True)
        for chunk in request.iter_content(chunk_size=1024):
            if chunk:
                f.write(chunk)
                f.flush()
#http://stackoverflow.com/questions/16694907/how-to-download-large-file-in-python-with-requests-py

downloader('http://vapp-updates.vmware.com/vai-catalog/valm/vmw/302ce45f-64cc-4b34-b470-e9408dbbc60d/5.8.4.207.latest/package_pool/kernel-default-3.0.101-0.46.1.x86_64.rpm','kernel-default-3.0.101-0.46.1.x86_64.rpm')
# you forgot to stream the download. otherwise it will only download the first 1k chunk and be done.