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BaseVariable is an ABC

This commit is contained in:
Alex Hall 2019-05-02 20:27:57 +02:00 committed by Ram Rachum
parent e3688e4b63
commit 4ebbbf8226
1 changed files with 3 additions and 1 deletions
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4
pysnooper/variables.py
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@ -1,11 +1,12 @@
import itertools import itertools
from abc import ABC, abstractmethod
from collections import Mapping, Sequence from collections import Mapping, Sequence
from copy import deepcopy from copy import deepcopy
from . import utils from . import utils
class BaseVariable(object): class BaseVariable(ABC):
def __init__(self, source, exclude=()): def __init__(self, source, exclude=()):
self.source = source self.source = source
self.exclude = utils.ensure_tuple(exclude) self.exclude = utils.ensure_tuple(exclude)
@ -18,6 +19,7 @@ class BaseVariable(object):
return () return ()
return self._items(main_value) return self._items(main_value)
@abstractmethod
def _items(self, key): def _items(self, key):
raise NotImplementedError() raise NotImplementedError()