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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_finder(import_path):
 """Get a process finder."""

    finder_class = import_string(import_path)
    if not issubclass(finder_class, BaseProcessesFinder):
        raise ImproperlyConfigured(
            'Finder "{}" is not a subclass of "{}"'.format(finder_class, BaseProcessesFinder))
    return finder_class()