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""" Checks that classes uses valid __slots__ """
# pylint: disable=too-few-public-methods, missing-docstring, no-absolute-import
# pylint: disable=using-constant-test
from collections import deque
def func():
if True:
return ("a", "b", "c")
else:
return [str(var) for var in range(3)]
class NotIterable(object):
def __iter_(self):
""" do nothing """
class Good(object):
__slots__ = ()
class SecondGood(object):
__slots__ = []
class ThirdGood(object):
__slots__ = ['a']
class FourthGood(object):
__slots__ = ('a%s' % i for i in range(10))
class FifthGood(object):
__slots__ = "a"
class SixthGood(object):
__slots__ = deque(["a", "b", "c"])
class SeventhGood(object):
__slots__ = {"a": "b", "c": "d"}
class Bad(object):
__slots__ = list
class SecondBad(object): # [invalid-slots]
__slots__ = 1
class ThirdBad(object):
__slots__ = ('a', 2) # [invalid-slots-object]
class FourthBad(object): # [invalid-slots]
__slots__ = NotIterable()
class FifthBad(object):
__slots__ = ("a", "b", "") # [invalid-slots-object]
class PotentiallyGood(object):
__slots__ = func()
class PotentiallySecondGood(object):
__slots__ = ('a', deque.__name__)
class PotentiallyThirdGood(object):
__slots__ = deque.__name__
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