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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_item(name):
 """ Useful for importing nested modules such as pymc.gp.cov_funs.isotropic_cov_funs. Updated with code copied from IPython under a BSD license. """

    package = '.'.join(name.split('.')[0:-1])
    obj = name.split('.')[-1]

    if package:
        module = __import__(package,fromlist=[obj])
        return module.__dict__[obj]
    else:
        return __import__(obj)