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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 _checkblk(name):
    '''
    Check if the blk exists and return its fstype if ok
    '''

    blk = __salt__['cmd.run']('blkid -o value -s TYPE {0}'.format(name),
                              ignore_retcode=True)
    return '' if not blk else blk