Newbie problem with urllib.request.urlopen

[Bernie Connors]

On Tuesday, September 26, 2017 at 12:32:18 PM UTC-3, Bernie Connors wrote:
> Hello,
> 
>       My first post here on C.L.P.  I have only written a few python scripts in 2.7 and now I'm trying my first python 3 script.  Can you tell me why this snippet won't run?
> -----------------------
> from urllib.request import urlopen
> 
> with urlopen('http://geonb.snb.ca/arcgis/rest/services/GeoNB_SNB_Parcels/MapServer/0/query?outSR=4617&f=JSON&where=PID='75385120'') as conn:
>     print(conn)
> -----------------------
> Thanks,
> Bernie.

Thomas,

      The PID parameter at the end of my url must be enclosed in single quotes, '75385120', or the API won't execute the query.  I have the code in a python notebook on Azure - 
https://notebooks.azure.com/n/n31C2DSCOr8/notebooks/URLopen%20Test.ipynb

Here are the error messages I am getting:
---------------------------------------------------------------------------
HTTPError                                 Traceback (most recent call last)
<ipython-input-9-ec8ba282ee14> in <module>()
      1 from urllib.request import urlopen
----> 2 with urlopen("http://geonb.snb.ca/arcgis/rest/services/GeoNB_SNB_Parcels/MapServer/0/query?outSR=4617&f=JSON&where=PID='75385120'") as conn:
      3     print(conn)

~/anaconda3_410/lib/python3.5/urllib/request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context)
    160     else:
    161         opener = _opener
--> 162     return opener.open(url, data, timeout)
    163 
    164 def install_opener(opener):

~/anaconda3_410/lib/python3.5/urllib/request.py in open(self, fullurl, data, timeout)
    469         for processor in self.process_response.get(protocol, []):
    470             meth = getattr(processor, meth_name)
--> 471             response = meth(req, response)
    472 
    473         return response

~/anaconda3_410/lib/python3.5/urllib/request.py in http_response(self, request, response)
    579         if not (200 <= code < 300):
    580             response = self.parent.error(
--> 581                 'http', request, response, code, msg, hdrs)
    582 
    583         return response

~/anaconda3_410/lib/python3.5/urllib/request.py in error(self, proto, *args)
    507         if http_err:
    508             args = (dict, 'default', 'http_error_default') + orig_args
--> 509             return self._call_chain(*args)
    510 
    511 # XXX probably also want an abstract factory that knows when it makes

~/anaconda3_410/lib/python3.5/urllib/request.py in _call_chain(self, chain, kind, meth_name, *args)
    441         for handler in handlers:
    442             func = getattr(handler, meth_name)
--> 443             result = func(*args)
    444             if result is not None:
    445                 return result

~/anaconda3_410/lib/python3.5/urllib/request.py in http_error_default(self, req, fp, code, msg, hdrs)
    587 class HTTPDefaultErrorHandler(BaseHandler):
    588     def http_error_default(self, req, fp, code, msg, hdrs):
--> 589         raise HTTPError(req.full_url, code, msg, hdrs, fp)
    590 
    591 class HTTPRedirectHandler(BaseHandler):

HTTPError: HTTP Error 403: Forbidden
--------------------------------------

Thanks,
Bernie.