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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 get_dpi():
 """Returns screen dpi resolution"""


    def pxmm_2_dpi((pixels, length_mm)):
        return pixels * 25.6 / length_mm

    return map(pxmm_2_dpi, zip(wx.GetDisplaySize(), wx.GetDisplaySizeMM()))