while...else when a journey is blocked Dry Run in PYTHON

while...else when a journey is blocked 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.

while...else when a journey is blocked Program Code

# Check each road section during a journey
road = ["clear", "clear", "blocked", "clear"]
position = 0

while position < len(road):
    status = road[position]
    print(f"Section {position + 1}: {status}")
    if status == "blocked":
        print("Journey stopped")
        break
    position += 1
else:
    print("Destination reached")

View the complete While programs page.