hugegraph-python-client

hugegraph-python

A Python SDK for Apache HugeGraph

Installation

pip3 install hugegraph-python

Install from source

cd /path/to/hugegraph-python-client

# Normal install 
pip install .

# (Optional) install the devel version
pip install -e .

Examples

from pyhugegraph.client import PyHugeClient

# For HugeGraph API version ≥ v3: (Or enable graphspace function)  
# - The 'graphspace' parameter becomes relevant if graphspaces are enabled.(default name is 'DEFAULT')
# - Otherwise, the graphspace parameter is optional and can be ignored. 
client = PyHugeClient("127.0.0.1", "8080", user="admin", pwd="admin", graph="hugegraph", graphspace="DEFAULT")

""""
Note:
Could refer to the official REST-API doc of your HugeGraph version for accurate details.
If some API is not as expected, please submit a issue or contact us.
"""
schema = client.schema()
schema.propertyKey("name").asText().ifNotExist().create()
schema.propertyKey("birthDate").asText().ifNotExist().create()
schema.vertexLabel("Person").properties("name", "birthDate").usePrimaryKeyId().primaryKeys("name").ifNotExist().create()
schema.vertexLabel("Movie").properties("name").usePrimaryKeyId().primaryKeys("name").ifNotExist().create()
schema.edgeLabel("ActedIn").sourceLabel("Person").targetLabel("Movie").ifNotExist().create()

print(schema.getVertexLabels())
print(schema.getEdgeLabels())
print(schema.getRelations())

"""Init Graph"""
g = client.graph()
g.addVertex("Person", {"name": "Al Pacino", "birthDate": "1940-04-25"})
g.addVertex("Person", {"name": "Robert De Niro", "birthDate": "1943-08-17"})
g.addVertex("Movie", {"name": "The Godfather"})
g.addVertex("Movie", {"name": "The Godfather Part II"})
g.addVertex("Movie", {"name": "The Godfather Coda The Death of Michael Corleone"})

g.addEdge("ActedIn", "12:Al Pacino", "13:The Godfather", {})
g.addEdge("ActedIn", "12:Al Pacino", "13:The Godfather Part II", {})
g.addEdge("ActedIn", "12:Al Pacino", "13:The Godfather Coda The Death of Michael Corleone", {})
g.addEdge("ActedIn", "12:Robert De Niro", "13:The Godfather Part II", {})

res = g.getVertexById("12:Al Pacino").label
# g.removeVertexById("12:Al Pacino")
print(res)
g.close()

"""Execute Gremlin Query"""
g = client.gremlin()
res = g.exec("g.V().limit(5)")
print(res)