[Neo4j] 批量创建日期节点_neo4j createdate

本文通过 py2neo 来创建创建图数据库节点，节点分为四类：年、月、周和日，关系包含：年到月、月到周、周到日。

1. 定义节点

from py2neo import Graph
from py2neo.ogm import GraphObject, Property, RelatedTo

class Year(GraphObject):
    '''
    年节点
    '''
    __primarykey__ = 'year'

    year = Property()

class Month(GraphObject):
    '''
    月节点
    '''
    __primarykey__ = 'month'

    month = Property()
    date_in = RelatedTo('Year', 'DATE_IN')

class Week(GraphObject):
    '''
    周节点
    '''
    __primarykey__ = 'week'

    week = Property()
    date_in = RelatedTo('Month', 'DATE_IN')


class Date(GraphObject):
    '''
    日节点
    '''
    __primarykey__ = 'date'

    date = Property()         # 日期字符串  %Y%m%d
    timestamp = Property()        # 时间戳
    week = Pr
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