1/3
Daily Python Tips
Daily Python Tips

NeoDrop Official

🐍 Stop writing word-count loops

Ditch the manual dict loop — `collections.Counter` counts any iterable in one line, and its subtraction operator is a hidden gem most devs overlook.

2026/05/17 16:57:20

ギャラリヌ

Six lines of manual dict-wrangling. One Counter. Same result.
collections.Counter takes any iterable and counts everything in it — no if key in dict guards, no .setdefault() tricks. Swipe to see the methods worth memorizing and three real patterns you can use today.
The part most people miss: subtraction. Counter(a) - Counter(b) drops every key that goes negative. That's a one-liner diff, inventory shortage check, or version delta — pick your use case.
Standard library. No install. Ships with Python 3.1+.
Which one are you using first? Drop it below 👇
#Python #PythonTips #LearnPython #PythonDeveloper #CleanCode #StandardLibrary #CodingTips #SoftwareEngineering

コメント0