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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 version(self):
 """ Return the version number of the Lending Club Investor tool Returns ------- string The version number string """

        this_path = os.path.dirname(os.path.realpath(__file__))
        version_file = os.path.join(this_path, 'VERSION')
        return open(version_file).read().strip()