Iterating over strings in Python - Mini Project: Build & Apply

Iterating over strings

📖 Scenario: You are working on a simple text analyzer that looks at each letter in a word to count vowels. This is useful for understanding how words are built and can help in language learning apps.

🎯 Goal: Build a small program that goes through each letter in a word and counts how many vowels it has.

📋 What You'll Learn

Create a string variable with a specific word

Create a variable to count vowels

Use a for loop to go through each letter in the string

Check if each letter is a vowel

Print the total count of vowels

💡 Why This Matters

🌍 Real World

Counting vowels helps in language learning apps and text analysis tools to understand word structure.

💼 Career

Knowing how to loop over strings and check characters is a basic skill useful in many programming jobs, including data processing and software development.

1

Create the word string

Create a string variable called word and set it to the exact value "education".

Python

# Create a string variable called word and set it to "education"
# Your code here

Need a hint?

Use quotes to create a string. For example: word = "hello"

2

Set up the vowel counter

Create a variable called vowel_count and set it to 0 to start counting vowels.

Python

word = "education"
# Create a variable vowel_count and set it to 0
# Your code here

Need a hint?

Use = 0 to start counting from zero.

3

Count vowels using a for loop

Use a for loop with the variable letter to go through each character in word. Inside the loop, use an if statement to check if letter is one of the vowels 'a', 'e', 'i', 'o', or 'u'. If it is, add 1 to vowel_count.

Python

word = "education"
vowel_count = 0
# Use a for loop to check each letter in word
# If the letter is a vowel, add 1 to vowel_count
# Your code here

Need a hint?

Remember, you can check if a letter is in a string of vowels using if letter in 'aeiou':

4

Print the total vowel count

Write a print statement to display the text "Number of vowels:" followed by the value of vowel_count using an f-string.

Python

word = "education"
vowel_count = 0
for letter in word:
    if letter in 'aeiou':
        vowel_count += 1
# Print the number of vowels using an f-string
# Your code here

Need a hint?

Use print(f"Number of vowels: {vowel_count}") to show the result.