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How to use bool method in Selene

Best Python code snippet using selene_python

exceptions.py

Source:exceptions.py

...4    Special Exception:5    6    If an API failed to load, it will be substituted with an instance of this class.7    """8    def __bool__(self):9        return False10    __nonzero__ = __bool__11    def __getattr__(self, attr):12        # This will be triggered if any attribute is sought.13        raise self14class WarehouseAPINotInstalled(WarehouseAPIFaked):15    pass16class WarehouseAPICredentialsMissing(WarehouseAPIFaked):17    pass18class WarehouseInvalidInput(RuntimeError):19    def __bool__(self):20        return False21    __nonzero__ = __bool__22class WarehouseTableGenericError(RuntimeError):23    def __init__(24        self,25        *args,26        exception:Exception,27        **kwargs,28    )->None:29        super().__init__(30            *args,31            **kwargs,32        )33        34        self.exception = exception35    def __bool__(self):36        return False37    __nonzero__ = __bool__38        39class WarehouseAccessDenied(RuntimeError):40    def __bool__(self):41        return False42    __nonzero__ = __bool__43class WarehouseTableNotFound(RuntimeError):44    def __bool__(self):45        return False46    __nonzero__ = __bool__47class WarehouseTableRowsInvalid(ValueError):48    def __bool__(self):49        return False50    __nonzero__ = __bool__51class WarehouseRowOversize(RuntimeError):52    def __bool__(self):53        return False...

invalid_bool_returned.py

Source:invalid_bool_returned.py

...3import six4from missing import Missing5class FirstGoodBool(object):6    """__bool__ returns <type 'bool'>"""7    def __bool__(self):8        return True9class SecondGoodBool(object):10    """__bool__ returns <type 'bool'>"""11    def __bool__(self):12        return bool(0)13class BoolMetaclass(type):14    def __bool__(cls):15        return True16@six.add_metaclass(BoolMetaclass)17class ThirdGoodBool(object):18    """Bool through the metaclass."""19class FirstBadBool(object):20    """ __bool__ returns an integer """21    def __bool__(self):  # [invalid-bool-returned]22        return 123class SecondBadBool(object):24    """ __bool__ returns str """25    def __bool__(self):  # [invalid-bool-returned]26        return "True"27class ThirdBadBool(object):28    """ __bool__ returns node which does not have 'value' in AST """29    def __bool__(self):  # [invalid-bool-returned]30        return lambda: 331class AmbigousBool(object):32    """ Uninferable return value """33    __bool__ = lambda self: Missing34class AnotherAmbiguousBool(object):35    """Potential uninferable return value"""36    def __bool__(self):...

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