NameError in Chapter19/example3

[Matej-Chmel]

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When running script Chapter19/example3.py a NameError is raised:

scheduler.shutdown()
NameError: name 'scheduler' is not defined

The problem can be fixed by indenting the line 27 under the main guard.

Current version

if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    ...
scheduler.shutdown()

Solution

if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    ...
    scheduler.shutdown()