DIRACSingleton

mod

DIRACSingleton

synopsis

metaclass singleton implementation

metaclass singleton implementation

class DIRAC.Core.Utilities.DIRACSingleton.DIRACSingleton(name, bases, dic)

Bases: type

Simple singleton pattern using metaclass

If you want make your class a singleton, just set its __metaclass__ to DIRACSingleton, i.e.:

import six
from DIRAC.Core.Utilities.DIRACSingleton import DIRACSingleton
@six.add_metaclass(DIRACSingleton)
class CheesShop(object):
  ...

__init__(name, bases, dic)

c’tor

Parameters

• cls – class def

• name – class name (becomes __name__ attr)

• bases – tuple of parent class defs (becomes __bases__ attr)

• dic – definition dict for class body (becomes __dict__ attr)

mro()

Return a type’s method resolution order.