🐍 Daily Python Problem: Frequency Count

Today's problem is to write a count _ frequency function that converts a list into a Dictionary to summarize how many times each item appears (frequency count)!

📝 Problem & Task:

Get the list and return the Dictionary. Key is the list and Value is the number of times it appears.

💡 3 different ways to count frequencies in Python!

1.Basic (Use Loop + If / Else) - Practice Logic! 🧱

• Create a blank judgment

• Loop, see if that item has ever been in the judgment.

• If ever (if item in map): Add + 1

• If never (else): Create a new Key and default to 1

• This method helps to understand the workings of the judgment.

2.Pythonic (use .get () method) - Shorter code! ✨

• Use the .get method (key, default _ value)

• frequency _ map [item] = frequency _ map.get (item, 0) + 1

• If the item exists, the original value is added 1. If it does not exist, the default value 0 is added 1 (the key is created). If / else is not required.

3.Pro model (use collections Counter) - the fastest! ⭐

• Use standard modules, collections and Counter classes

• Just return Counter (items) is done!

• This method is the shortest, easiest to read, and fastest in practical use!

💖 Knowing how to solve a problem will make us choose the tool that best suits the situation! Keep going!

# python # Programming # data # ai # learnonlemon8