Count vowels in a string Dry Run in PYTHON

Count vowels in a string is an interactive PYTHON dry run visualizer from the For programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Count vowels in a string Program Code

# Count vowels in a string
text = input("Enter a string: ")
vowels = "aeiouAEIOU"

count = 0
for char in text:
    if char in vowels:
        count += 1

print(f"String: {text}")
print(f"Number of vowels: {count}")

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