How To Count Vowels In A String Python
Last Updated : Apr 9, 2023
IN - Python
In this article we will show you the solution of how to count vowels in a string python, a user may utilize a python vowel counter to determine how many vowel each word in a string, dictionary, or loop has used.
Using recursive function, one may determine the number of vowels and their lengths in a given string.
We use the function repeatedly up until the base condition. Another method to count and display the vowels in a string involves combining the filter function with the Counter class from the collection’s module.
Now let's talk about the idea of counting vowels in a Python string.
Step By Step Guide On How To Count Vowels In A String Python :-
Method - To determine the number of vowel in the given string, use list comprehension:
def vowel_count(str): vowels = "aeiouAEIOU" count = len([char for char in str if char in vowels]) print("No. of vowels :", count) str = "Talkerscode" vowel_count(str)
- Here, you can see how the list comprehension technique is used to construct the Python code of counting vowels in a string.
- The function is defined on the initial line of code, and then a string containing every vowel is created.
- The next step is to run through the given string of characters using list comprehension to determine whether or not each character is a vowel.
- Add the character to a list if it is a vowel.
- To determine the number of vowels in the provided string, just use len() method to count the elements in the list.
- Next we output the number of vowel in the string using the print function from Python.
Method - Using reduce() and lambda function:
from functools import reduce def check_vow(string, vowels): vowel_list = reduce(lambda x, y: x + [y] if y in vowels else x, string, ) print(len(vowel_list)) print(vowel_list) string = "Talkerscode" vowels = "AaEeIiOoUu" check_vow(string, vowels)
- In this example, you can see how the lambda function and reduction method are used to construct the Python code to count the vowels in a string.
- Our code begins with the import of the reduction module.
- Python's reduction() function, which is included in the functools module, does not return an iterator or a list of values in more than one place.
- It just outputs a single value, which is the outcome of reducing the entire iterable to just a single integer, string, or boolean.
- Following that, we write a function called "check vow" that accepts a string or a string that contains all vowels as inputs.
- Make a list of the vowels in the provided string using the reduce function.
- Print the list of vowel's length as well as the list of vowel after that.
- And use the provided string & vowel string to call the function.
Hence we have successfully learned the concept of how to count vowels in a string python.
We also learned that a user can use a Python vowels counter to see how many vowels every word in a string, dictionaries, and loop has already used.
I hope this article on how to count vowels in a string python helps you and the steps and method mentioned above are easy to follow and implement.