たとえば
import collections
d = collections.defaultdict(lambda:collections.defaultdict(float))
のようにすれば
d['poko']['hoge'] += 1.0
みたいなカウントアップがsetdefaultを書かずに書ける
More than 5 years have passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme