python - 问如何自动从数组列表中抓取单词

Question

作为标题，我对 diigo 进行网络爬虫，并且有很多列表，我将列表添加到 set() 中。如下所示:

data = [ ['spanish', 'web2.0', 'e-learning', 'education', 'social', 'spain', 'tools', 'learning', 'google', 'e-learning2.0'],   ['education', 'technology', 'learning', 'classroom', 'students', 'web2.0'], ['education'],  ['technology'] ]

并进行一些计算

search_table = {}

for i, tag_list in enumerate(data):
    for tag in tag_list:
        if tag not in search_table:
            search_table[tag] = set()
        search_table[tag].add(i)  

# How many people have `technology`?
print(len(search_table["technology"]))
# How many people have `education`?
print(len(search_table["education"]))
# How many people have both `technology`, `education`?
print(len(search_table["technology"] & search_table["education"]))

数据有很多标签，我想这样做 ->print(len(search_table["technology"]))<- 技术可以自动改变下一个世界喜欢类。

我真的不知道该怎么办，我只想到

for u in user_data:

   print u

但是如何将世界添加到 print(len(search_table["u "]))

真诚的鲍勃

Answer 1

我想我明白你的意思了。你就快到了:

user_data = ["technology", "classroom"]
for u in user_data:
    print(len(search_table[u]))

将首先打印 search_table["technology"] 中的项目数，然后打印 search_table["classroom"] 中的项目数。