Why Does My Python Script Run Without Executing the `main()` Function?

Python Script Executes Without Running main() Function

When running a Python script, you may encounter a scenario where the script executes without fulfilling the intended functionality defined in the main() function. This behavior can leave you puzzled, wondering why your code is not producing the desired results.

To address this issue, it's crucial to understand that simply defining a function, such as main(), does not automatically trigger its execution. In Python, functions are declared first and then called later to initiate their execution.

In the provided code snippet:

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

The main() function is merely being declared but not invoked. To execute this function, you need to explicitly call it, as shown below:

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

main()  # Calling the function explicitly</code>

By explicitly calling main(), you initiate its execution and ensure that the functionality defined within this function is carried out. This simple modification will resolve the issue and allow your script to run as intended.

The above is the detailed content of Why Does My Python Script Run Without Executing the `main()` Function?. For more information, please follow other related articles on the PHP Chinese website!