python.decorators.singleton.Singleton Class Reference

Metaclass for implementing the Singleton pattern. More...

Inheritance diagram for python.decorators.singleton.Singleton:

Collaboration diagram for python.decorators.singleton.Singleton:

Public Member Functions
def	__call__ (cls, *args, **kwargs)
	Retrieve the singleton instance, creating if necessary. More...

Static Private Attributes
dictionary	_instances = {}

Detailed Description

Metaclass for implementing the Singleton pattern.

Author

James Robinson james.nosp@m..rob.nosp@m.inson.nosp@m.@cer.nosp@m.n.ch

Definition at line 3 of file singleton.py.

Member Function Documentation

__call__()

def python.decorators.singleton.Singleton.__call__	(		cls,
		*	args,
		**	kwargs
	)

Retrieve the singleton instance, creating if necessary.

Definition at line 11 of file singleton.py.

    def __call__(cls, *args, **kwargs):
        """! Retrieve the singleton instance, creating if necessary."""
        if cls not in cls._instances:
            cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
        return cls._instances[cls]

Member Data Documentation

_instances

dictionary python.decorators.singleton.Singleton._instances = {}

staticprivate

Definition at line 9 of file singleton.py.

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The documentation for this class was generated from the following file:

• singleton.py