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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 orientnii(imfile):
    '''Get the orientation from NIfTI sform.  Not fully functional yet.'''
    strorient = ['L-R', 'S-I', 'A-P']
    niiorient = []
    niixyz = np.zeros(3,dtype=np.int8)
    if os.path.isfile(imfile):
        nim = nib.load(imfile)
        pct = nim.get_data()
        A = nim.get_sform()
        for i in range(3):
            niixyz[i] = np.argmax(abs(A[i,:-1]))
            niiorient.append( strorient[ niixyz[i] ] )
        print niiorient