如何将打印函数的结果添加到列表中

Question

我有以下以打印函数结尾的定义：

from nltk.corpus import words
nltk.download('words')
correct_spellings = words.words()
from nltk.metrics.distance import jaccard_distance
from nltk.util import ngrams
from nltk.metrics.distance  import edit_distance    
        
def answer_nine(entries=['cormulent', 'incendenece', 'validrate']):
    for entry in entries:
        temp = [(jaccard_distance(set(ngrams(entry, 2)), set(ngrams(w, 2))),w) for w in correct_spellings if w[0]==entry[0]]
        result = print(sorted(temp, key = lambda val:val[0])[0][1])
    return  result 
answer_nine()

我已正确打印出三个结果，但我想将它们列在一个列表中。我试图以多种不同的方式将它们分配到列表中，但我总是收到以下错误消息：AttributeError: 'NoneType' object has no attribute 'append'. I do不明白为什么我的结果有一个 NoneType 如果它有值，我在这里遗漏了什么？

ps.: 如果我像这样删除打印功能： result = sorted(temp, key = lambda val:val[0])[0][1] 我只收到第三个单词，但至少它有字符串类型。

Answer 1

from nltk.corpus import words
import nltk
nltk.download('words')
correct_spellings = words.words()
from nltk.metrics.distance import jaccard_distance
from nltk.util import ngrams
from nltk.metrics.distance  import edit_distance    
        
def answer_nine(entries=['cormulent', 'incendenece', 'validrate']):
    result_2=[]
    for entry in entries:
        temp = [(jaccard_distance(set(ngrams(entry, 2)), set(ngrams(w, 2))),w) for w in correct_spellings if w[0]==entry[0]]
        result_2.append(sorted(temp, key = lambda val:val[0])[0][1])
        result = print(sorted(temp, key = lambda val:val[0])[0][1])
    return  result, result_2 
a,b=answer_nine()
print(a)

print(b)

这段代码对我有用！并在列表中给出来自函数调用的相同字符串，除了 None 值

Answer 2

def answer_nine(entries=['cormulent', 'incendenece', 'validrate']):
    result = []
    for entry in entries:
        temp = [(jaccard_distance(set(ngrams(entry, 2)), set(ngrams(w, 2))),w) for w in correct_spellings if w[0]==entry[0]]
        result.append(sorted(temp, key = lambda val:val[0])[0][1])
    return result

returns ['corpulent', 'indecence', 'validate']

如何将打印函数的结果添加到列表中

How do I add the result of a print function ito a list

python

nltk

text-mining