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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_lutfiles_version(self):
 """Check the version of the atm correction luts from the version file in the specific aerosol correction directory """

        basedir = RAYLEIGH_LUT_DIRS[self._aerosol_type]
        lutfiles_version_path = os.path.join(basedir,
                                             ATM_CORRECTION_LUT_VERSION[self._aerosol_type]['filename'])

        if not os.path.exists(lutfiles_version_path):
            return "v0.0.0"

        with open(lutfiles_version_path, 'r') as fpt:
            # Get the version from the file
            return fpt.readline().strip()