问题描述
def listingLyrics(song):
"""
returns the lyrics of a song in a list,and lowercased
"""
lyricList = []
song = song.lower()
alphabet = 'abcdefghijklmonpqrstuvwxyz' #characters to be used in lyrics
lyric = ''
for char in song:
if char not in alphabet:
lyricList.append(lyric)
lyric = '' #reset lyric value,but returns many ['']
continue
else:
lyric += char
lyricList = [e for e in lyricList if e not in ''] #added this to remove [''] from list
return lyricList
x = "She! loves you,yeah,yeah She loves you,yeah."
y = "can't"
大家好，所以我这样做是对自己的挑战，这是一个返回列表中歌曲歌词的程序，全部为小写。例如，listingLyrics(x) 返回 ['she','loves','you','yeah',...]。有没有更有效的方法来完成这项工作，用更小的步骤，也许删除列表理解？或者列表理解是否必要？这可以递归完成吗？谢谢。
解决方法
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