Since the YouTube API is based on GData, which is based on Atom, the 'author' object is an array with name objects that can contain names, URLs, etc.
Is this what you want:
>>> client = gdata.youtube.service.YouTubeService()
>>> video = client.GetYouTubeVideoEntry(video_id='CoYBkXD0QeU')
>>> video.author[0].name.text
'GoogleDevelopers'
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