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@ -329,7 +329,12 @@ class PluginLoader:
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obj = getattr(self._module_cache[path], self.class_name)
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else:
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obj = getattr(self._module_cache[path], self.class_name)(*args, **kwargs)
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if self.base_class and self.base_class not in [base.__name__ for base in obj.__class__.__bases__]:
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if self.base_class:
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# The import path is hardcoded and should be the right place,
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# so we are not expecting an ImportError.
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module = __import__(self.package, fromlist=[self.base_class])
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# Check whether this obj has the required base class.
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if not issubclass(obj.__class__, getattr(module, self.base_class, None)):
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return None
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return obj
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