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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 locate_bar_l(icut, epos):
 """Fine position of the left CSU bar"""

    def swap_coor(x):
        return x

    def swap_line(tab):
        return tab

    return _locate_bar_gen(icut, epos,
                           transform1=swap_coor,
                           transform2=swap_line
                           )