#!/usr/bin/env python import json class Audio(object): def __init__(self, file_id, duration, mime_type=None, file_size=None): self.file_id = file_id self.duration = duration self.mime_type = mime_type self.file_size = file_size @staticmethod def de_json(data): return Audio(file_id=data.get('file_id', None), duration=data.get('duration', None), mime_type=data.get('mime_type', None), file_size=data.get('file_size', None)) def to_json(self): json_data = {'file_id': self.file_id, 'duration': self.duration} if self.mime_type: json_data['mime_type'] = self.mime_type if self.file_size: json_data['file_size'] = self.file_size return json.dumps(json_data) def __str__(self): return self.to_json()