「自分のために役に立つメモシステム」は、検索やカテゴリ分けしやすいように「#〜〜〜vv」とタグから始まります。このタグですが、各タグごとにその個数で一覧表示できるといいですよね。 それが、「python」の「collections.Counter」でできちゃうんです。

# The "old" way word_list = ["apple", "banana", "apple", "orange", "banana", "apple"] word_counts = {} for word in word_list: if word in word_counts: word_counts[word ...

collections モジュールのCounter型を使って、listの要素を種類ごとに数も集計する。

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In the "coding path" of Python data processing, there are always some repetitive yet crucial tasks that can be quite troublesome—such as counting the most frequently used words in user comments, ...

A counter is a container that stores elements as dictionary keys, and their counts are stored as dictionary values. Raghu is a shoe shop owner. His shop has X number of shoes. He has a list containing ...