Py2neo 1.6 is built for Neo4j 2.0 and includes new features like Cypher transactions, label support, and schema index support. It also improves Unicode support, streaming for Cypher and batches, adds implicit authentication, and includes a Neotool shell and Load2neo integration while removing Gremlin support.

1. py2neo 1.6
py2neo 1.6
@technige

2. (py2neo 1.6)-[:IS_BUILT_FOR]->(Neo4j 2.0)
py2neo 1.6
@technige

3. What's new?
●
Cypher transactions
●
Label support
●
Schema index support (but not constraints)
●
Better Unicode support
●
Improved streaming for Cypher and batches
●
Implicit authentication
py2neo 1.6
@technige

4. What else?
●
Neotool shell
●
Gremlin removed (see py2neo-gremlin)
●
Load2neo integration
py2neo 1.6
@technige

5. Cypher Transactions
Server
Client
Session
Transaction
Transaction
Statement
Statement
Statement
Statement
Statement
Statement
py2neo 1.6
execute
commit
rollback
@technige

6. Cypher Transactions
>>> from py2neo import cypher
>>> session = cypher.Session("http://arthur:excalibur@camelot:7474")
>>> tx = session.create_transaction()
>>> tx.append("MERGE (a:Person {name:'Alice'}) RETURN a")
>>> tx.append("MERGE (b:Person {name:'Bob'}) RETURN b")
>>> tx.append("MATCH (a), (b) WHERE a.name = 'Alice' AND b.name = 'Bob' "
"CREATE UNIQUE (a)-[ab:KNOWS]->(b) RETURN ab")
>>> tx.commit()
[[Record(columns=(u'a',), values=(Node('.../node/1'),))],
[Record(columns=(u'b',), values=(Node('.../node/2'),))],
[Record(columns=(u'ab',), values=(Relationship('.../relationship/1'),))]]
py2neo 1.6
@technige

7. Node Labels
Node.add_labels(*labels)
Add one or more labels to this node.
>>> from py2neo import neo4j, node
>>> graph_db = neo4j.GraphDatabaseService()
>>> alice, = graph_db.create(node(name="Alice"))
>>> alice.add_labels("female", "human")
py2neo 1.6
@technige

8. Node Labels
Node.remove_labels(*labels)
Remove one or more labels from this node.
Node.get_labels()
Fetch all labels associated with this node.
GraphDatabaseService.find(label, property_key=None, property_value=None)
Iterate through a set of labelled nodes,
optionally filtering by property key and value.
py2neo 1.6
@technige

9. Neotool Shell
$ neotool shell -U arthur -W excalibur -H camelot
Neotool Shell (py2neo/1.6.1 Python/2.7.3-final-0)
Copyright 2013, Nigel Small
camelot:7474/cypher> MATCH (a) RETURN a LIMIT 3
a
---------------------(1 {"name":"Alice"})
(2 {"name":"Bob"})
(3 {"name":"Carol"})
(3 rows)
py2neo 1.6
@technige

10. https://pypi.python.org/pypi/py2neo
~
https://github.com/nigelsmall/py2neo
py2neo 1.6
@technige