[英]How to iterate over values in dictionary which each key has multiple values
我有一本這樣的字典:
{4722: "['children', 'dance', 'education','technology', 'teaching']",
3200: "['alternative energy', 'sustainability', 'technology']",
1636: "['computers', 'performance', 'simplicity', 'software', 'ice']",
1697: "['MacArthur grant', 'inequality', 'technology', 'pollution']"}
現在,我想在每一行中找到“技術”一詞,並對鍵求和。 像這里一樣,我的總和為4722 + 3200 + 1697。
誰能幫我嗎?
我應該提到我的原始數據框有2000行。
使用內置函數sum()
,並傳遞一個適當的生成器表達式: sum(k for k,v in d.items() if 'technology' in v)
(nb在Python2中使用d.iteritems()
)。
可運行的演示:
d = {
4722: "['children', 'dance', 'education','technology', 'teaching']",
3200: "['alternative energy', 'sustainability', 'technology']",
1636: "['computers', 'performance', 'simplicity', 'software', 'ice']",
1697: "['MacArthur grant', 'inequality', 'technology', 'pollution']"
}
result = sum(k for k,v in d.items() if 'technology' in v)
assert result == 9619
參考文獻:
your_data = {
4722: "['children', 'dance', 'education','technology', 'teaching']",
3200: "['alternative energy', 'sustainability', 'technology']",
1636: "['computers', 'performance', 'simplicity', 'software', 'ice']",
1697: "['MacArthur grant', 'inequality', 'technology', 'pollution']"
}
sum_up = 0
for k, v in your_data.items():
if 'technology' in v:
sum_up += k
print('sum_up:', sum_up)
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