Get charge transfer from file.

        Args:
            feff_inp_file (str): name of feff.inp file for run
            ldos_file (str): ldos filename for run, assume consequetive order,
                i.e., ldos01.dat, ldos02.dat....

        Returns:
            dictionary of dictionaries in order of potential sites
            ({"p": 0.154, "s": 0.078, "d": 0.0, "tot": 0.232}, ...)

def charge_transfer_from_file(feff_inp_file, ldos_file):
        """
        Get charge transfer from file.

        Args:
            feff_inp_file (str): name of feff.inp file for run
            ldos_file (str): ldos filename for run, assume consequetive order,
                i.e., ldos01.dat, ldos02.dat....

        Returns:
            dictionary of dictionaries in order of potential sites
            ({"p": 0.154, "s": 0.078, "d": 0.0, "tot": 0.232}, ...)
        """
        cht = OrderedDict()
        parameters = Tags.from_file(feff_inp_file)

        if 'RECIPROCAL' in parameters:
            dicts = [dict()]
            pot_dict = dict()
            dos_index = 1
            begin = 0
            pot_inp = re.sub(r'feff.inp', r'pot.inp', feff_inp_file)
            pot_readstart = re.compile('.*iz.*lmaxsc.*xnatph.*xion.*folp.*')
            pot_readend = re.compile('.*ExternalPot.*switch.*')
            with zopen(pot_inp, "r") as potfile:
                for line in potfile:
                    if len(pot_readend.findall(line)) > 0:
                        break
                    if begin == 1:
                        z_number = int(line.strip().split()[0])
                        ele_name = Element.from_Z(z_number).name
                        if len(pot_dict) == 0:
                            pot_dict[0] = ele_name
                        elif len(pot_dict) > 0:
                            pot_dict[max(pot_dict.keys()) + 1] = ele_name
                        begin += 1
                        continue
                    if begin == 2:
                        z_number = int(line.strip().split()[0])
                        ele_name = Element.from_Z(z_number).name
                        dicts[0][ele_name] = dos_index
                        dos_index += 1
                        if len(pot_dict) == 0:
                            pot_dict[0] = ele_name
                        elif len(pot_dict) > 0:
                            pot_dict[max(pot_dict.keys()) + 1] = ele_name
                    if len(pot_readstart.findall(line)) > 0:
                        begin = 1
        else:
            pot_string = Potential.pot_string_from_file(feff_inp_file)
            dicts = Potential.pot_dict_from_string(pot_string)
            pot_dict = dicts[1]

        for i in range(0, len(dicts[0]) + 1):
            if len(str(i)) == 1:
                with zopen("{}0{}.dat".format(ldos_file, i), "rt") \
                        as fobject:
                    f = fobject.readlines()
                    s = float(f[3].split()[2])
                    p = float(f[4].split()[2])
                    d = float(f[5].split()[2])
                    f1 = float(f[6].split()[2])
                    tot = float(f[1].split()[4])
                    cht[str(i)] = {pot_dict[i]: {'s': s, 'p': p, 'd': d,
                                                 'f': f1,
                                                 'tot': tot}}
            else:
                with zopen(ldos_file + str(i) + ".dat", "rt") as fid:
                    f = fid.readlines()
                    s = float(f[3].split()[2])
                    p = float(f[4].split()[2])
                    d = float(f[5].split()[2])
                    f1 = float(f[6].split()[2])
                    tot = float(f[1].split()[4])
                    cht[str(i)] = {pot_dict[i]: {'s': s, 'p': p, 'd': d,
                                                 'f': f1,
                                                 'tot': tot}}

        return cht