8_count-vowels.py

# Python3 code to count vowel in a string using set 
  
# Function to count vowel 
def vowel_count(str): 
      
    # Initializing count variable to 0 
    count = 0
      
    # Creating a set of vowels 
    vowel = set("aeiouAEIOU") 
      
    # Loop to traverse the alphabet in the given string 
    for alphabet in str: 
      
        # If alphabet is present in set vowel 
        if alphabet in vowel: 
            count = count + 1
      
    print "No. of vowels :", count 
#string in which vowels need to be counted . Can be edited     
str = "Hackoctoberfest" 
vowel_count(str)