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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 import_class(klass):
 """ Imports a class from a fully qualified name string. :param klass: class string, e.g. "pyqode.core.backend.workers.CodeCompletionWorker" :return: The corresponding class """

    path = klass.rfind(".")
    class_name = klass[path + 1: len(klass)]
    try:
        module = __import__(klass[0:path], globals(), locals(), [class_name])
        klass = getattr(module, class_name)
    except ImportError as e:
        raise ImportError('%s: %s' % (klass, str(e)))
    except AttributeError:
        raise ImportError(klass)
    else:
        return klass