Nine-second timer simulation Dry Run in PYTHON

Nine-second timer simulation is an interactive PYTHON dry run visualizer from the While 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.

Nine-second timer simulation Program Code

# Timer that runs for 9 seconds
import time

print("=== NINE-SECOND TIMER ===")
print("The timer will run for 9 seconds.")

counter = 1

while counter <= 9:
    print(f"Timer: {counter} seconds")
    time.sleep(1)
    counter += 1

print("Timer completed after 9 seconds.")

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