Modifying outer variable using `nonlocal` Dry Run in PYTHON

Modifying outer variable using `nonlocal` is an interactive PYTHON dry run visualizer from the Advanced 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.

Modifying outer variable using `nonlocal` Program Code

def counter():
    count = 0
    def increment():
        nonlocal count
        count += 1
        return count
    return increment

c = counter()
print(c())
print(c())
print(c())

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