Why Is My Python `main()` Function Not Executing?

Why Isn't the main() Function Executing When Running a Python Script?

Consider the following Python code:

<code class="python">def main():
    print("boo")</code>

When attempting to execute this script in Python 3.3, it fails to execute. No errors or messages are displayed. What could be causing this issue?

The problem lies in the fact that the main() function is simply declared but never called. In Python, functions are not executed automatically upon declaration. To execute a function, it must be explicitly called.

To resolve this issue, add a statement like the following at the end of the script to call the main() function:

<code class="python">main()</code>

This call will execute the main() function and print the message "boo" as intended.

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