In Python, the if __name__ == "__main__": statement is used to check whether the script is being run directly or being imported as a module into another script.
When a Python script is run, the __name__ variable is set to "__main__" by default. So, when the if __name__ == "__main__": statement is used, it checks if the value of the __name__ variable is equal to "__main__". If it is, it means that the script is being run directly, and any code inside the if statement will be executed.
On the other hand, if the script is being imported as a module into another script, the value of the __name__ variable will not be equal to "__main__", and the code inside the if statement will not be executed.
Here’s an example to illustrate this:
# my_module.py
def my_function():
print(“Hello, World!”)if __name__ == “__main__”:
my_function()
If we run this script directly, the output will be "Hello, World!". However, if we import this script as a module into another script and run that script, the my_function() function will not be executed.
# another_script.py
import my_module
# the code here will not execute the my_function() function
- sunny asked 1 month ago
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