Python标识中的无效字符

Question

下面的python代码在标识符中得到错误的无效字符。知道为什么吗？这是一个我正在编写的未完成的函数，由于这个错误它没有运行，所以没有返回。在

def spotifyrecs(mylibrary, newsongs):
    total = 0
    count = 0
    genredict = {}
    for artist in mylibrary:
        artistsongs = mylibrary[artist]
        for adict in artistsongs:
            total += adict["plays"]
            count += 1
            if adict["genre"] not in genredict:
                genredict[adict["genre"]] = 1
            if adict["genre"] in genredict:
                genredict[adict["genre"]] += 1
    avgplays = round(total / count, 2)
    genrelist = []
    for genre in genredict:
        newtup = (genredict[genre], genre)
        genrelist.append(newtup)
    genrelist.sort(reverse = True)
    return None

library = ​{"Ariana Grande": [{"title": "thank u, next", "plays": 100, "genre": "pop"}, {"title": "Last Christmas", "plays": 44, "genre": "Christmas"}], "Khalid":[{"title": "Location", "plays": 15, "genre": "R&B"}, {"title": "Young, Dumb, and Broke", "plays": 90, "genre": "R&B"}]}
songs = [{"title": "Loving is Easy", "artist": "Rex Orange County", "plays": 115, "genre": "R&B"}, {"title": "Halo", "artist": "Beyonce", "plays": 9, "genre": "R&B"}, {"title": "Focus", "artist": "Ariana Grande", "plays": 112, "genre": "pop"}, {"title": "Winter", "artist": "Khalid", "plays": 800, "genre": "R&B"}]
print(spotifyrecs(library, songs))

错误：

^{pr2}$

Answer 1

您的输入中有一个非打印字符：去掉<；200b>；字符，这样可以很好地运行。在

library = <200b>{
    "Ariana Grande": [
        {"title": "thank u, next", "plays": 100, "genre": "pop"}, 
        {"title": "Last Christmas", "plays": 44, "genre": "Christmas"}
    ],
    "Khalid":[
        {"title": "Location", "plays": 15, "genre": "R&B"},
        {"title": "Young, Dumb, and Broke", "plays": 90, "genre": "R&B"}
    ]}

请注意，这有助于使程序更具可读性。将其分隔到单独的行中并进行缩进很好地完成了两件事：（1）解析器为我提供了一个更好的位置，因为它可以在行尾发出错误消息；（2）通过这种方式，我可以更容易地查找简单的打字错误和括号平衡。在