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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 _fill_entries(self):
 """Populate entries dictionaries from index."""

        for file in self.index.files:
            path = self.index.paths[file.pathIndex]
            data_offset = file.dataOffset
            data_size = file.dataSize
            obj = RAFEntry(self._data_handle, path, data_offset, data_size)
            # Add to full path dictionary
            assert path not in self.entries_full
            self.entries_full[path.lower()] = obj
            # Add to name dictionary
            name = os.path.basename(path).lower()
            if name not in self.entries_name:
                self.entries_name[name] = []
            self.entries_name[name].append(obj)