Count number of Vowels and Consonants in a string using Python

In this tutorial, we will learn how to count the number of vowels and consonants in a string in python. I hope you know what consonants and vowels are. We will be using If Else statements so I hope you are familiar with them too.  So now let’s get started.

Count number of Vowels and Consonants in a string in Python

First of all, We will need a string in which we will count the number of vowels and consonants. Let’s name our string my_string.

my_string="Nitesh Jhawar"

Now after the string declaration, we will create a set that will contain all the vowels with both cases (Upper and Lower).
This can be done by using an inbuilt function set() which will takes a string as an argument.
set() will convert a string into a set with values separated by a comma.

vowel = set("aeiouAEIOU")
print(vowel)

Output:

{'o', 'I', 'e', 'a', 'u', 'A', 'O', 'U', 'i', 'E'}

Now we take 2 variables v_count and c_count which counts the number of vowels and consonants respectively and initialize them to zero.

v_count=0
c_count=0

We are all set to apply our logic.
Using for loop, we iterate inside my_string as,

for i in my_string:

Now we need to apply our If-Else conditions.

if i in vowel:
       v_count=v_count+1
elif( (i>='a' and i<='z') or (i>='A' and i<='Z')):
       c_count = c_count + 1

First line checks if the set vowel contains i, which was our iterating variable used in for loop. If true, the v_count will increment by one.
Else if i is between [a,z] or between [A, Z] then c_count will increment by one.

Finally, we print the value of c_count and v_count.

print(c_count) 
print(v_count)

Our final code looks like this:

my_string="Nitesh Jhawar"
vowel = set("aeiouAEIOU")
print(vowel) 
v_count=0
c_count=0
for i in my_string: 
    if i in vowel:
        v_count=v_count+1
    elif( (i>='a' and i<='z') or (i>='A' and i<='Z')):
        c_count = c_count + 1
print("Number of consonents in the sring:", c_count) 
print("Number of vowels in the string:", v_count)

Output:

{'o', 'I', 'e', 'a', 'u', 'A', 'O', 'U', 'i', 'E'}
Number of consonents in the sring: 8
Number of vowels in the string: 4

Also, learn

• fibonacci series in python (Time complexity:O(1))