Apr 8, 2010 · Given a single item, how do I count occurrences of it in a list, in Python? A related but different problem is counting occurrences of each different element in a collection, getting …

Other than doing list comprehensions of reversed list comprehension, is there a pythonic way to sort Counter by value? If so, it is faster than this: >>> from collections import Counter &...

How to add or increment single item of the Python Counter class Asked 10 years, 5 months ago Modified 4 years, 3 months ago Viewed 103k times

The python cProfile and pstats modules offer great support for measuring time elapsed in certain functions without having to add any code around the existing functions.

I want a dictionary that counts how many times each item appears in the list. So for the list above the result should be: {'apple': 2, 'red': 3, 'pear': 1} How can I do this simply in Python? If you …

Sep 28, 2009 · Also, be aware that, in Python, += and friends are not operators that can be used in expressions. Rather, in Python they are defined as part of an "augmented assignment …

79 Both Counter and defaultdict(int) can work fine here, but there are few differences between them: Counter supports most of the operations you can do on a multiset. So, if you want to use …

I want to count how many members of an iterable meet a given condition. I'd like to do it in a way that is clear and simple and preferably reasonably optimal. My current best ideas are: sum(

Dec 27, 2017 · As the comments on the question point out, the subtract method is applied to its object in place and returns None. To get the behaviour you want you can either use the - …

I have a string "Hello I am going to I with hello am". I want to find how many times a word occur in the string. Example hello occurs 2 time. I tried this approach that only prints characters - def