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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 rowxcol(row, col):
 """Multiply one row and one column."""

    row = row.reshape(4, 4)
    col = col.reshape(4, 8)
    ret = uint2exprs(0, 8)
    for i in range(4):
        for j in range(4):
            if row[i, j]:
                ret ^= xtime(col[i], j)
    return ret