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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 readFAM(basefilename,usecols=None):
 """ helper method for speeding up read FAM """

    fam = basefilename+'.fam'
    fam = SP.loadtxt(fam,dtype=bytes,usecols=usecols)
    return fam