issue with singleton python call two times __init__

Question

I have a singleton like this

class Singleton:

    class __impl:
        def __init__(self):
            print \"INIT\"

    __instance = None

    def __ini         


        

Answer 1

PEP 318 has an example of a singleton decorator for classes:

def singleton(cls):
    instances = {}
    def getinstance():
        if cls not in instances:
            instances[cls] = cls()
        return instances[cls]
    return getinstance

@singleton
class MyClass:
    ...

(though I haven't used it myself.)

Btw, about...

I made a singleton like this

Also, you should mention that you copied it directly from ActiveState.