How do I count the number of occurrences of a character in a string? e.g. 'a' appears in 'Mary had a little lamb' 4 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.

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 &...

Cause: Counter is only supported in python2.7 and higher and is not available in earlier versions - Counter class got added into collections package in Python 2.7.

Python newb here. I m trying to count the number of letter "a"s in a given string. Code is below. It keeps returning 1 instead 3 in string "banana". Any input appreciated. def count_letters(word,...

A set uses .update to add multiple items, and .add to add a single one. Why doesn't collections.Counter work the same way? To increment a single Counter item using Counter.update, it seems like you...

most_common = collections.Counter(list).most_common(to_find) However, I can't seem to find anything comparable, for finding the least common element. Could I please get recommendations on how to do.

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

What is an efficient way to find the most common element in a Python list? My list items may not be hashable so can't use a dictionary. Also in case of draws the item with the lowest index should be

Although the time complexity of using max() is worse than using Counter.most_common(1) as PM 2Ring comments, the approach benefits from a rapid C implementation and I find this approach is fastest …