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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_dump(self, fmap='', with_stats=False):
 """ Returns the dump the model as a list of strings. """


        length = ctypes.c_ulong()
        sarr = ctypes.POINTER(ctypes.c_char_p)()
        if self.feature_names is not None and fmap == '':
            flen = int(len(self.feature_names))

            fname = from_pystr_to_cstr(self.feature_names)

            if self.feature_types is None:
                # use quantitative as default
                # {'q': quantitative, 'i': indicator}
                ftype = from_pystr_to_cstr(['q'] * flen)
            else:
                ftype = from_pystr_to_cstr(self.feature_types)
            _check_call(_LIB.XGBoosterDumpModelWithFeatures(self.handle,
                                                            flen,
                                                            fname,
                                                            ftype,
                                                            int(with_stats),
                                                            ctypes.byref(length),
                                                            ctypes.byref(sarr)))
        else:
            if fmap != '' and not os.path.exists(fmap):
                raise ValueError("No such file: {0}".format(fmap))
            _check_call(_LIB.XGBoosterDumpModel(self.handle,
                                                c_str(fmap),
                                                int(with_stats),
                                                ctypes.byref(length),
                                                ctypes.byref(sarr)))
        res = from_cstr_to_pystr(sarr, length)
        return res