support of non multi variable
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@ -121,7 +121,7 @@ class Values(object):
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(is_frozen and
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'force_default_on_freeze' in setting[opt])):
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no_value_slave = False
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if opt.impl_get_multitype() == multitypes.slave:
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if opt.impl_is_multi() and opt.impl_get_multitype() == multitypes.slave:
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masterp = self.context.cfgimpl_get_description().impl_get_path_by_opt(
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opt.impl_get_master_slaves())
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mastervalue = getattr(self.context, masterp)
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@ -132,8 +132,7 @@ class Values(object):
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if not no_value_slave:
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value = self._getcallback_value(opt)
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if opt.impl_is_multi():
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if opt.impl_get_multitype() == multitypes.slave:
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if opt.impl_is_multi() and opt.impl_get_multitype() == multitypes.slave:
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if isinstance(value, list):
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raise ValueError('callback must not return list '
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'in slave {0}: {1}'.format(opt._name,
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