6

我试图弄清楚如何简化这段代码。每个 if 条件的逻辑基本相同，所以我想摆脱重复的 if：

      if "video_codec" in profile:
          self.video_codec = profile["video_codec"]
      if "resolution_width" in profile:
          self.resolution_width = profile["resolution_width"]
      if "resolution_height" in profile:
          self.resolution_height = profile["resolution_height"]
      if "ratio" in profile:
          self.ratio = profile["ratio"]
      if "video_bitrate" in profile:
          self.video_bitrate = profile["video_bitrate"]
      if "profile" in profile:
          self.profile = profile["profile"]
      if "audio_codec" in profile:
          self.audio_codec = profile["audio_codec"]
      if "audio_channels" in profile:
          self.audio_channels = profile["audio_channels"]
      if "audio_bitrate" in profile:
          self.audio_bitrate = profile["audio_bitrate"]

我希望这可以用 3-4 行而不是我的 18 行来完成。

4

2 回答 2

10 
for key, value in profile.iteritems():
    setattr(self, key, value)

应该做你想做的

于 2012-07-05T15:48:05.677 回答
7

如果您只想将所有键/值对从 复制profile到 中的属性self，则可以使用以下内容：

self.__dict__.update(profile)

如果profile您不想复制某些项目，则可以使用以下内容：

for attr in ("video_codec", "resolution_width", "resolution_height", "video_bitrate", 
             "ratio", "profile", "audio_codec", "audio_channels", "audio_bitrate"):
    if attr in profile: 
        setattr(self, attr, profile[attr])
于 2012-07-05T15:50:23.450 回答