Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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Singleton decorator definition
from functools import wraps
def Singleton(cls):
Decorator implementing the singleton pattern:
it restricts the instantiation of a class to one "single" instance.
instances = {}
def getinstance():
"""Find an instance or save newly created one"""
if cls not in instances:
instances[cls] = cls()
return instances[cls]
return getinstance