Someone can help me understand this code!

Question

Can someone help me by telling me what each part of this code does!

 from collections import Counter
def jaccard_repeats(a, b):
    """Jaccard similarity measure between input iterables,
    allowing repeated elements"""
    _a = Counter(a)
    _b = Counter(b)
    c = (_a - _b) + (_b - _a)
    n = sum(c.values())
    return 1 - n/(len(a) + len(b) - n)

list1 = ['dog', 'cat', 'rat', 'cat']
list2 = ['dog', 'cat', 'rat']
list3 = ['dog', 'cat', 'mouse']     

jaccard_repeats(list1, list3)      
>>> 0.25

Answer 1

Try to use the divides and Conquer because breaking the code makes it easier to understand.

for example:

What does this first passage mean:

from Collections import Counter

Dai, you go doing line by line to understand, can include as many comments as it takes to go learning.

Better for you to go debugging your own code and understand what’s going on than for someone to tell you what’s going on.

Good luck in school!