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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 lte2json(self, filename):
 """ convert lte to json return tuple of json, lte file content """

        lpins = lattice.LteParser(filename)
        data_json = lpins.file2json()

        latins = lattice.Lattice(lpins.file2json())
        self.lattice_instance = latins
        self.all_beamlines = latins.getAllBl()
        if self.use_beamline is None:
            self.use_beamline = 'BL' if 'BL' in self.all_beamlines else self.all_beamlines[
                0]
        bl_ele_list = [latins.getFullBeamline(k, True)
                       for k in self.all_beamlines]
        self.beamlines_dict = dict(zip(self.all_beamlines, bl_ele_list))

        data_lte = open(filename, 'r').read()
        return data_json, data_lte