In Python, programs typically have a special block of code that is executed when the script is run directly. This block of code is often referred to as the “main” section of the program, and it is defined using the if __name__ == "__main__": construct. This allows you to write code that can be both imported as a module in other scripts and run as a standalone script.
Here’s an example of how the “main” section works in a Python program:
pythonCopy codedef some_function():
# Function code here
if __name__ == "__main__":
# Code in this block will only execute if the script is run directly,
# not when it's imported as a module in another script.
# You can call functions and write code specific to the standalone script here.
some_function()
print("This code runs when the script is run directly.")
When you run this script directly, the code inside the if __name__ == "__main__": block will execute. If you import this script as a module in another Python script, the code inside the block will not execute unless explicitly called.
This separation of code allows you to create reusable modules and scripts in Python while controlling which parts of the code are executed in different contexts.
