我有以下示例代码:
articles = {'article1.txt': {'harry': 3, 'hermione': 2, 'ron': 1},
'article2.txt': {'dumbledore': 5, 'hermione': 3},
'article3.txt': {'harry': 5, 'hermione': 5}}
keywords = ['hermione', 'dumbledore']
def recommend_articles(articles, keywords):
def max_count(key):
result = 0
for names in articles.keys():
for name, count in articles[names].items():
if name in keywords:
result += count
print name, count, result
return result
article_list = sorted(articles.keys(), key=max_count, reverse = True)
print article_list
从函数中打印出来的是:
hermione 2 2
hermione 5 7
dumbledore 5 12
hermione 3 15
hermione 2 2
hermione 5 7
dumbledore 5 12
hermione 3 15
hermione 2 2
hermione 5 7
dumbledore 5 12
hermione 3 15
['article1.txt', 'article3.txt', 'article2.txt']
而且我不太清楚发生了什么。我应该得到:
>>>recommended_articles(articles, keywords)
['article2.txt', 'article3.txt', 'article1.txt']
但无论我是否更改关键字,我的功能都会一直返回['article1.txt', 'article3.txt', 'article2.txt']
。
非常感谢帮助!
答案 0 :(得分:0)
我认为这就是你所需要的:
articles = {'article1.txt': {'harry': 3, 'hermione': 2, 'ron': 1},
'article2.txt': {'dumbledore': 5, 'hermione': 3},
'article3.txt': {'harry': 5, 'hermione': 5}}
keywords = ['hermione', 'dumbledore']
def recommend_articles(articles, keywords):
def max_count(key):
result = 0
for name in articles[key].keys():
if name in keywords:
result = result + articles[key][name]
return result
article_list = sorted(articles.keys(), key=max_count, reverse = True)
print article_list
print(recommend_articles(articles, keywords))
答案 1 :(得分:0)
只是一个信息:文章是dict的dict形式。因此,您将始终获得无序输出。尝试使用有序的dict文章