gistfile1.py

class Person (Entity):
    using_options (tablename = 'person')

    full_name   = Field(String)
    given_name  = Field(String)
    sur_name    = Field(String)
    affiliation = Field(String)

    account     = OneToMany('Account')

    sponsor     = OneToMany('Person', inverse='sponsored')
    sponsored   = ManyToOne('Person', inverse='sponsor')