Unable to pass authentication information to NetSuite's REST interface using Python

Question

I've been trying to get a NetSuite Restlet to work with Python 3.3 using urllib, but I can't seem to get the authorization to take and continually return a urllib.error.HTTPError: HTTP Error 401: Authorization Required error.

Where am I going wrong with authentication?

My test code is as follows:

import urllib.request

url = 'https://rest.netsuite.com/app/site/hosting/restlet.nl?script=123&deploy=15&recordtype=salesorder&id=123456789'

authorization = 'NLAuth nlauth_account=111111,nlauth_email=email@email.com,nlauth_signature=password,nlauth_role=3' 

req = urllib.request.Request(url)
req.add_header('Authorization', authorization)
req.add_header('Content-Type','application/json')
req.add_header('Accept','*/*')
response = urllib.request.urlopen(req)
the_page = response.read()

For reference, NetSuite's REST help was used to build the authorization string as well as the Python docs on urllib located here

--EDIT--

The header that is passed (and works) via REST Console appears as follows:

Accept: application/json
Authorization: NLAuth nlauth_account=111111,nlauth_email=user@email.com,nlauth_signature=password,nlauth_role=3
Connection: keep-alive
Content-Type: application/xml
Origin: chrome-extension: //rest-console-id
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36

headers output from Python appear as:

{'Content-type': 'application/xml', 'Accept': 'application/json', 'Authorization': 'NLAuth nlauth_account=111111,nlauth_email=email@email.com,nlauth_signature=password,nlauth_role=3'}

still not sure why it's not working....

score 9 · Accepted Answer · answered Sep 24 '13 at 20:42

Issue was NetSuite related (an issue with roles): Code below yeilds a proper response:

import urllib.request
try:   
    url = 'https://rest.netsuite.com/app/site/hosting/restlet.nl?script=787&deploy=1&recordtype=salesorder&id=8111437'
    authorization = 'NLAuth nlauth_account=111111,nlauth_email=email@email.com,nlauth_signature=password,nlauth_role=correctRole' 
    req = urllib.request.Request(url)
    req.add_header('Authorization', authorization)
    req.add_header('Content-Type','application/xml')
    req.add_header('Accept','application/json')  
    response = urllib.request.urlopen(req)
    print(response.read())
except IOError as e:
    print("EXCEPTION OCCURRED--------------------")
    print("I/O error: {0}".format(e))
    print(e.headers)
    print(e.headers['www-authenticate'])

In my case, the original role did not have access to the record. The confusion was I was expecting an error of

error code: INVALID_ROLE
error message:Your role does not give you permission to view this page.

to be returned, not an authentication required which made me suspect the header was missing data.

Unable to pass authentication information to NetSuite's REST interface using Python

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