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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_long_description():
 """ Retrieve the long description from DESCRIPTION.rst """

    here = os.path.abspath(os.path.dirname(__file__))

    with copen(os.path.join(here, 'DESCRIPTION.rst'), encoding='utf-8') as description:
        return description.read()