Question: I'm trying to connect my neo4J DB with Python using py2neo.

I'm following the example extracted from py2neo 2 API but there's no way to get it work.

My code:

```
from py2neo import Graph
graph = Graph("http://neo4j:1234@localhost:7474/C:/Users/htilmatine/Documents/Neo4j/default.graphdb")

```

The error:

```
Traceback (most recent call last):
  File "D:\TFG\python\ejm.py", line 1, in <module>
    from py2neo import Graph
  File "C:\Python27\lib\site-packages\py2neo-2.0a0-py2.7.egg\py2neo\__init__.py", line 27, in <module>
    from py2neo.batch import *
  File "C:\Python27\lib\site-packages\py2neo-2.0a0-py2.7.egg\py2neo\batch\__init__.py", line 19, in <module>
    from py2neo.batch.core import *
  File "C:\Python27\lib\site-packages\py2neo-2.0a0-py2.7.egg\py2neo\batch\core.py", line 24, in <module>
    from py2neo.core import NodePointer, Service
  File "C:\Python27\lib\site-packages\py2neo-2.0a0-py2.7.egg\py2neo\core.py", line 50, in <module>
    from py2neo.error.client import BindError, JoinError
ImportError: No module named error.client

```

Answer: 
The connection docs are [here](http://py2neo.org/2.0/essentials.html#the-graph).

If you're just using a default install and default graph data directory, you should be able to connect with:

```
graph = Graph("http://neo4j:1234@localhost:7474/db/data")

```

or 

```
from py2neo import ServiceRoot
graph = ServiceRoot("http://neo4j:1234@localhost:7474").graph

```

If you're not using the default data directory then 

* it needs to be a subdirectory of `/neo4j/data`
* you need to provide a relative path to it from the neo4j directory in your uri like:

`graph = Graph("http://neo4j:1234@localhost:7474/db/data/my_graph_dir")`

EDIT: fixed the first Graph url, and added how to connect with `ServiceRoot`
I'm concerned about seeing `py2neo-2.0a0` in your path name. I'd strongly recommend using a more up-to-date version of py2neo, specifically not an alpha release.