gistfile1.py

import requests

class RemoteFile(object):
    def __init__(self, url):
        self.url = url
        self.position = 0
        
    def tell(self):
        return self.position
        
    def seek(self, position):
        self.position = position
        
    def read(self, bytes):
        start = self.position
        end = start+bytes
        headers = {'Range': 'bytes=%d-%d' % (start, end)}
        
        r = requests.get(url, headers=headers)
        return r.content
        

buf = RemoteFile('http://test.pydap.org/coads.nc')
from pupynere import netcdf_file
f = netcdf_file(buf)
print f.variables