Count elements in string python
In this tutorial, we will learn about the Python String count() method with the help of examples. Show
The Example
Syntax of String countThe syntax of string.count(substring, start=..., end=...) count() Parameters
Note: Index in Python starts from 0, not 1. count() Return Value
Example 1: Count number of occurrences of a given substring
Output The count is: 2 Example 2: Count number of occurrences of a given substring using start and end
Output The count is: 1 Here, the counting starts after the first And, it ends before the last How do I count the number of occurrences of a character in a string? e.g.
Mateen Ulhaq 22.2k16 gold badges86 silver badges127 bronze badges asked Jul 20, 2009 at 20:00
2
Mateen Ulhaq 22.2k16 gold badges86 silver badges127 bronze badges answered Jul 20, 2009 at 20:04
Ogre CodesOgre Codes 17.7k1 gold badge16 silver badges24 bronze badges 2 You can use
Mateen Ulhaq 22.2k16 gold badges86 silver badges127 bronze badges answered Jul 20, 2009 at 20:04
eduffyeduffy 38.2k12 gold badges93 silver badges91 bronze badges To get the counts of all letters, use
Mateen Ulhaq 22.2k16 gold badges86 silver badges127 bronze badges answered Aug 1, 2012 at 22:12
Brenden BrownBrenden Brown 3,0551 gold badge13 silver badges15 bronze badges 4 Regular expressions maybe?
answered Jul 20, 2009 at 20:03
Sinan TaifourSinan Taifour 10.1k3 gold badges31 silver badges30 bronze badges 6 Python-3.x:
tremendows 4,1943 gold badges31 silver badges51 bronze badges answered Jul 20, 2009 at 20:05
Aaron FiAaron Fi 9,94613 gold badges64 silver badges91 bronze badges 1
more info here answered Jul 20, 2009 at 20:04
Finer ReclinerFiner Recliner 1,5591 gold badge13 silver badges21 bronze badges
A better approach for this job would be:
So you'll have a dict that returns the number of occurrences of every letter in the string and
For a case insensitive counter you could override the mutator and accessor methods by subclassing
answered Oct 2, 2016 at 2:33
Nuno AndréNuno André 3,8301 gold badge29 silver badges40 bronze badges 3 This easy and straight forward function might help:
If a comprehension is desired:
rayryeng 101k21 gold badges181 silver badges185 bronze badges answered Mar 20, 2018 at 13:19
0 Regular expressions are very useful if you want case-insensitivity (and of course all the power of regex).
Be aware that the regex version takes on the order of ten times as long to run, which will likely be an issue only if my_string is tremendously long, or the code is inside a deep loop. answered Dec 5, 2014 at 17:04
jafeldsjafelds 8648 silver badges12 bronze badges 1 I don't know about 'simplest' but simple comprehension could do:
Taking advantage of built-in sum, generator comprehension and fact that bool is subclass of integer: how may times character is equal to 'a'. answered Sep 20, 2020 at 8:55
Aivar PaalbergAivar Paalberg 4,1484 gold badges16 silver badges16 bronze badges
answered Oct 24, 2015 at 22:36
rookierookie 611 silver badge1 bronze badge 0 I am a fan of the pandas library, in particular the
answered Jan 19, 2020 at 9:23
1
This will result in :
Also, there is one more advantage to this is if the sentence is a list of sub-strings containing same characters as above, then also this gives the correct result because of the use of
This also results in :
But Of-course this will work only when
checking occurrence of single character such as answered Mar 28, 2017 at 17:13
An alternative way to get all the character counts without using
answered Mar 7, 2019 at 9:04
answered Sep 29, 2020 at 3:27
KquekKquek 574 bronze badges 2 I know the ask is to count a particular letter. I am writing here generic code without using any method.
output
Now if you want any particular letter frequency, you can print like below.
answered Feb 3, 2021 at 11:42
Rishi BansalRishi Bansal 3,4352 gold badges24 silver badges44 bronze badges To find the occurrence of characters in a sentence you may use the below code Firstly, I have taken out the unique characters from the sentence and then I counted the occurrence of each character in the sentence these includes the occurrence of blank space too.
Output of the above code is below.
answered Sep 23, 2021 at 5:06
5 "Without using count to find you want character in string" method.
answered Jan 11, 2015 at 17:24
B-YB-Y 1671 gold badge2 silver badges12 bronze badges 1
Ther are two ways to achieve this: 1) With built-in function count()
2) Without using a function
answered Sep 7, 2019 at 20:16
Dipen GajjarDipen Gajjar 1,17813 silver badges22 bronze badges the easiest way is to code in one line:
but if you want can use this too:
answered Dec 21, 2021 at 13:34
3
answered Apr 1, 2016 at 1:29
1 Taking up a comment of this user:
Out:
Check 's'. You can filter this tuple of two arrays as follows:
Side-note: It works like answered Dec 29, 2021 at 19:29
No more than this IMHO - you can add the upper or lower methods
answered Feb 23, 2016 at 19:16
Tim SeedTim Seed 4,8762 gold badges27 silver badges26 bronze badges You can use loop and dictionary.
blackbishop 28.6k10 gold badges53 silver badges70 bronze badges answered Dec 24, 2021 at 10:03
poolie 9,0421 gold badge46 silver badges73 bronze badges answered Nov 15, 2015 at 19:05
How do you count items in a string?The count() method returns the number of occurrences of a substring in the given string.. substring - string whose count is to be found.. start (Optional) - starting index within the string where search starts.. end (Optional) - ending index within the string where search ends.. How do you count occurrences of a character in a string?First, we split the string by spaces in a. Then, take a variable count = 0 and in every true condition we increment the count by 1. Now run a loop at 0 to length of string and check if our string is equal to the word.
How do you count elements in a list Python?The most straightforward way to get the number of elements in a list is to use the Python built-in function len() . As the name function suggests, len() returns the length of the list, regardless of the types of elements in it.
How do you count multiple strings in Python?Python String count() function is an inbuilt function in python programming language that returns the number of occurrences of a substring in the given string.. Syntax:. Parameters:. Return Value:. |