title: Error connecting python to neo4j using py2neo
body: <p>I wrote the following python code to neo4j using py2neo</p>
  
  <pre><code> from py2neo import Graph
   from py2neo import neo4j,Node,Relationship
   sgraph = Graph()
   alice = Node("person",name="alice")
   bob   = Node("person",name="bob")
   alice_knows_bob = Relationship(alice,"KNOWS",bob)
   sgraph.create(alice_knows_bob)
  </code></pre>
  
  <p>but i got the following error</p>
  
  <pre><code>Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 258, in get
  response = self.__base.get(headers=headers, redirect_limit=redirect_limit, *
  *kwargs)
  File "C:\Python34\lib\site-packages\py2neo\packages\httpstream\http.py",line
  966, in get
  return self.__get_or_head("GET", if_modified_since, headers, redirect_limit,
  **kwargs)
  File "C:\Python34\lib\site-packages\py2neo\packages\httpstream\http.py",line
  943, in __get_or_head
  return rq.submit(redirect_limit=redirect_limit, **kwargs)
  File "C:\Python34\lib\site-packages\py2neo\packages\httpstream\http.py",line
  452, in submit
  return Response.wrap(http, uri, self, rs, **response_kwargs)
  File "C:\Python34\lib\site-packages\py2neo\packages\httpstream\http.py",line
  489, in wrap
  raise inst
  py2neo.packages.httpstream.http.ClientError: 401 Unauthorized
  
  During handling of the above exception, another exception occurr ed:
  
  Traceback (most recent call last):
  File "neo.py", line 7, in &lt;module&gt;
  sgraph.create(alice_knows_bob)
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 704, in create
  statement = CreateStatement(self)
  File "C:\Python34\lib\site-packages\py2neo\cypher\create.py", 44,in__init__
  self.supports_node_labels = self.graph.supports_node_labels
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 1078, in   supports_node_labels return self.neo4j_version &gt;= (2, 0)
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 956, in  neo4j_version
  return version_tuple(self.resource.metadata["neo4j_version"])
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 213, in metadata
  self.get()
  File "C:\Python34\lib\site-packages\py2neo\core.py", line 261, in get
  raise Unauthorized(self.uri.string)
  py2neo.error.Unauthorized: http://localhost:7474/db/data/
  </code></pre>
  
  <p>can anyone please help me.This is the first time i writing python code to connect to neo4j. </p>