[已解决]报错原因

fupl2020

wordstring = """it was the best of times it was the worst of times.
it was the age of wisdom it was the age of foolishness"""
wordstring = wordstring.replace(".","")
# print(wordstring)
wordlist = wordstring.split()
# print(wordlist)
wordfreq = []
for w in wordlist:
    wordfreq.append(wordlist.count(w))
# print(wordfreq)
d = dict(wordlist,wordfreq)
print(d)
请教报错原因？？

最佳答案

月排行榜 / 总排行榜

isdkz

2023-1-30 17:53:31

dict的用法错了，dict 最多只能接收一个位置参数，而且这个位置参数需要能迭代出两个元素的序列

所以我用 zip 将你的两个列表打包成 zip 对象，这样应该能符合你的需求

1. wordstring = """it was the best of times it was the worst of times.
   
2. it was the age of wisdom it was the age of foolishness"""
   
3. wordstring = wordstring.replace(".","")
   
4. # print(wordstring)
   
5. wordlist = wordstring.split()
   
6. # print(wordlist)
   
7. wordfreq = []
   
8. for w in wordlist:
   
9.     wordfreq.append(wordlist.count(w))
   
10. # print(wordfreq)
    
11. d = dict(zip(wordlist,wordfreq))                         # 改了这一行
    
12. print(d)

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跳转到最佳答案楼层

isdkz

dict的用法错了，dict 最多只能接收一个位置参数，而且这个位置参数需要能迭代出两个元素的序列

所以我用 zip 将你的两个列表打包成 zip 对象，这样应该能符合你的需求

1. wordstring = """it was the best of times it was the worst of times.
   
2. it was the age of wisdom it was the age of foolishness"""
   
3. wordstring = wordstring.replace(".","")
   
4. # print(wordstring)
   
5. wordlist = wordstring.split()
   
6. # print(wordlist)
   
7. wordfreq = []
   
8. for w in wordlist:
   
9.     wordfreq.append(wordlist.count(w))
   
10. # print(wordfreq)
    
11. d = dict(zip(wordlist,wordfreq))                         # 改了这一行
    
12. print(d)

复制代码

歌者文明清理员

zip很难理解，还有一种方法

1. d = {}.fromkeys(wordlist)
   
2. for i, key in enumerate(list(d.keys())):
   
3.     d[key] = wordfreq[i]

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isdkz

歌者文明清理员 发表于 2023-1-31 08:24
zip很难理解，还有一种方法

用 zip 是比较优雅的做法，而且你那个 enumerate 的参数有点多此一举，直接用 d 就可以了

1. d = {}.fromkeys(wordlist)
   
2. for i, key in enumerate(d):       # 这一行直接用 d 就可以
   
3.     d[key] = wordfreq[i]

复制代码

歌者文明清理员

isdkz 发表于 2023-1-31 10:28
用 zip 是比较优雅的做法，而且你那个 enumerate 的参数有点多此一举，直接用 d 就可以了

呵呵，因为自己没试过，用的是保险的方法