Counter instance method with inner class

Question

I'm building a function pipeline and I need know how many class instance is opened for indexing each function, also I need to set 'Start' param for init the counter to 0 as it handle run many time the same pipeline without have the count increasing above the limit.

First at all I build a method which is working well with only one pipeline, as the Counter is shared with each other pipeline class

class Foo3():
    class Counter:
        def __init__(self,func):
            self.counter = 0
            self.func = func
            #Counter.method  =method
        def __call__(self,*args, **kwds):
            self.counter += 1
            return self.func(*args, **kwds)



    #count= Counter()
    string = 'this is '
    start = True

    def __init__(self, name):
        self.name = name
        #self.method = method
        self.ainit(self)
        self.newinst()
        print(self.newinst.counter)
    @Counter
    def newinst():
        pass
    @classmethod
    def ainit(cls,inst):
        print(cls.string +inst.name)

    @classmethod
    def getCount(cls,inst):
        print(self.newinst.counter) 

class pipe1(Foo3):
    pass
class pipe2(Foo3):
    pass 
pipe1('test')
pipe1('test2')
pipe1('test3')
pipe2('test_new')

output

this is test
1
this is test2
2
this is test3
3
this is test_new
4

Now I try to figure out how pass a start method within the Counter Class in the purpose to indicate where pipe line start. But my solution is not working because I try to use @static method in a wrong way

class Foo3():
    class Counter:
        method = 'regular'
        def __init__(self,func,method:str='regular' ):
            self.counter = 0
            self.func = func
            Counter.method  =method
        def __call__(self,method,*args, **kwds):
            if Counter.method == 'Start':
                print('count = 0')
                self.counter = 0
            if Counter.method == 'regular' :  
                print('+1')
                self.counter += 1
            return self.func(*args, **kwds)

    #count= Counter()
    string = 'this is '
    start = True
    @Counter
    @staticmethod
    def newinst(method='regular'):
        pass
    def __init__(self, name, method:str='regular'):
        self.name = name
        self.method = method
        print(self.ainit(self))
        Foo3.newinst(method)
        print(self.newinst.counter)

    @classmethod
    def ainit(cls,inst):
        print(cls.string +inst.name)

    @classmethod
    def getCount(cls,inst):
        print(self.newinst.counter) 

If I used a counter Class as solution it's because I want one count per Pipeline

class pipe1(Foo3):
    pass
class pipe2(Foo3):
    pass    


pipe1('test', 'Start')
pipe1('test2')
pipe1('test3')
pipe2('test_new', 'Start')
pipe1.getCount()
pipe2.getCount()

output expected :

this is test

1
this is test2
2
this is test3
3
this is test_new
1
3
1

but i get as issue :

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-440-1710b9b56152> in <module>
     54 
     55 if __name__ == "__main__":
---> 56     Foo3('a')

<ipython-input-440-1710b9b56152> in __init__(self, name, method)
     43         self.name = name
     44         self.method = method
---> 45         Foo3.newinst(method)
     46         print(self.newinst.counter)
     47 

<ipython-input-440-1710b9b56152> in __call__(self, method, *args, **kwds)
     29                 print('+1')
     30                 self.counter += 1
---> 31             return self.func(*args, **kwds)
     32 
     33 

TypeError: 'staticmethod' object is not callable

Answer 1

I find a solution

class Foo3():
    class Counter:

        method = 'regular'
        def __init__(self,func, method= 'regular'):
            self.counter = 0
            self.func = func
            #print(method)
            Counter.method  =method
            #print(Counter.method)
        def __call__(self,*args,method ='regular', **kwds):

            if method == 'Start':
                self.counter =0
            elif method =='regular':
                self.counter += 1
            else :
                raise Exception("this method doesn't exist")
            return self.func(*args, **kwds)



    #count= Counter()
    string = 'this is '
    start = True
    @Counter
    def newinst(method='regular'):
        pass
    def __init__(self, name, method= 'regular'):
        self.name = name
        #self.method = method
        self.ainit(self)
        self.newinst(method=method)
        print(self.newinst.counter)

    @classmethod
    def ainit(cls,inst):
        print(cls.string +inst.name)

    @classmethod
    def getCount(cls,inst):
        print(self.newinst.counter) 

output

class pipe1(Foo3):
    pass
class pipe2(Foo3):
    pass    
pipe1('test', 'Start')
pipe1('test2')
pipe1('test3')
pipe2('test_new','Start')

this is test
0
this is test2
1
this is test3
2
this is test_new
0

My error came from my weak knowledge about decorator and inner Class, in my exemple , the __init__ fonction of Counter is instanciate even before I build a pipeline, then I didn't figure out how pass 'Start' in parameter as I set it in the init function. Now my other problem - as @MisterMiyagi mentionned - come from the fact that my getCount()function shouldn't work and I better to keep out the Counter class, but I didn't still figuring out how open one Counter instance per pipeline with inheritance of Foo3 without specify it in the `pipline Class global' parameter.