我的 python 代碼是關(guān)于從 dict 鍵生成序列號(hào)，并且我的 dict 鍵是使用模塊中的cycle包定義的范圍。itertoolsworking example:from itertools import cyclee = {'Apple': cycle(range(1,999)),'Orange': cycle(range(1,999)),'Banana': cycle(range(1,999))}def SequenceNum(f):    return f'{next(e[f])}'.zfill(3)X = SequenceNum('Apple')print(X)output001 --> it keeps incrementing in the range specified above in dict `e`Challenge:我的要求是將此字典e轉(zhuǎn)換為 json 文件。因此它將通過(guò)解析 json 文件來(lái)加載鍵和值。cat test.json{    "DATA": {        "Apple": "cycle(range(1,999))",        "Orange": "cycle(range(1,999))",        "Banana": "cycle(range(1,999))"    }}（我必須將 dict 值放在雙引號(hào)內(nèi)以避免 json 文件加載錯(cuò)誤。）codeimport jsonfrom itertools import cyclewith open('test.json') as f:    FromJson = json.load(f)d = FromJson['DATA']print(d)def SequenceNum(f):    return f'{next(d[f])}'.zfill(3)X = SequenceNum('Apple')i = 1while i <= 10:    print(i, SequenceNum('Apple'))    i += 1這里新的 dict 是d加載 json 文件，它將加載單引號(hào)中的值。output{'Apple': 'cycle(range(1,999))', 'Orange': 'cycle(range(1,999))', 'Banana': 'cycle(range(1,999))'} #THIS IS OUTPUT of 'd' after loading json fileTraceback (most recent call last):  File "c:\Users\chandu\Documents\test.py", line 14, in <module>    print(i, SequenceNum('Apple'))  File "c:\Users\chandu\Documents\test.py", line 12, in SequenceNum    return f'{next(d[f])}'.zfill(3)TypeError: 'str' object is not an iterator它給出了錯(cuò)誤，因?yàn)槲业?dict 值不能通過(guò)循環(huán) itertools 模塊正確迭代，因?yàn)樗鼈冊(cè)谝?hào)中。我不知道這個(gè)錯(cuò)誤是否還有其他原因。