Python's Collections Module: Counter - DEV Community
Python Training by Dan Bader - 💌🐍 collections.Counter in the #Python standard library is great! (Get the whole series at http://dbader.org/python-tricks?utm_campaign=meetedgar&utm_medium=social&utm_source=meetedgar.com) | Facebook
Python's Counter: Efficient Data Counting | by Sarper Makas | Medium