human
Complete the below
def _merge_aa2re(aa1, aa2, shift_val, aa2re, reid):

    ''''Merge two amino acids based on detected frame shift value (PRIVATE).'
    '''
 ... What is a the Python program you requested?
assistant
#Here is the Python program you requested.
    def get_aa_from_codonre(re_aa):
        aas = []
        m = 0
        for i in re_aa:
            if (i == '['):
                m = (-1)
                aas.append('')
            elif (i == ']'):
                m = 0
                continue
            elif (m == (-1)):
                aas[(-1)] = (aas[(-1)] + i)
            elif (m == 0):
                aas.append(i)
        return aas
    scodon = list(map(get_aa_from_codonre, (aa2re[aa1], aa2re[aa2])))
    if (shift_val == 1):
        intersect = ''.join((set(scodon[0][2]) & set(scodon[1][0])))
        scodonre = (('(?P<' + reid) + '>')
        scodonre += (((((((((((((('[' + scodon[0][0]) + ']') + '[') + scodon[0][1]) + ']') + '[') + intersect) + ']') + '[') + scodon[1][1]) + ']') + '[') + scodon[1][2]) + ']')
    elif (shift_val == 2):
        intersect1 = ''.join((set(scodon[0][1]) & set(scodon[1][0])))
        intersect2 = ''.join((set(scodon[0][2]) & set(scodon[1][1])))
        scodonre = (('(?P<' + reid) + '>')
        scodonre += ((((((((((('[' + scodon[0][0]) + ']') + '[') + intersect1) + ']') + '[') + intersect2) + ']') + '[') + scodon[1][2]) + ']')
    scodonre += ')'
    return scodonre