fix abc hierarchy (#584)

CHANGELOG.rst

@@ -8,6 +8,17 @@ Release Notes
 ...........
 
 
+0.12.6 (2022-08-30)
+-------------------
+
+Minor:
+
+* Add JOSS paper of version 0.12.5
+* Update Julia reference DiffEqJump -> JumpProcesses (name change)
+* Unfix jinja2
+* Update flake8 dependencies after new issues
+
+
 0.12.5 (2022-06-21)
 -------------------
 

pyabc/sampler/base.py

@@ -1,4 +1,4 @@
-from abc import ABC, abstractmethod
+from abc import ABC, ABCMeta, abstractmethod
 from numbers import Real
 from typing import Callable, Union
 
@@ -33,12 +33,13 @@ def sample_until_n_accepted(self, n, simulate_one, t, **kwargs):
     return sample_until_n_accepted
 
 
-class SamplerMeta(type):
+class SamplerMeta(ABCMeta):  # noqa: B024
     """
     This metaclass handles the checking of sampling output values.
     """
 
     def __init__(cls, name, bases, attrs):
+        ABCMeta.__init__(cls, name, bases, attrs)
         cls.sample_until_n_accepted = wrap_sample(cls.sample_until_n_accepted)
 
 

pyabc/transition/transitionmeta.py

@@ -1,4 +1,5 @@
 import functools
+from abc import ABCMeta
 from typing import Union
 
 import numpy as np
@@ -52,13 +53,14 @@ def rvs_single(self):
     return rvs_single
 
 
-class TransitionMeta(type):
+class TransitionMeta(ABCMeta):  # noqa: B024
     """
     This metaclass handles the special case of no parameters.
     Transition classes do not have to check for it anymore
     """
 
     def __init__(cls, name, bases, attrs):
+        ABCMeta.__init__(cls, name, bases, attrs)
         cls.fit = wrap_fit(cls.fit)
         cls.pdf = wrap_pdf(cls.pdf)
         cls.rvs = wrap_rvs(cls.rvs)

pyabc/version.py

@@ -1 +1 @@
-__version__ = '0.12.5'
+__version__ = '0.12.6'