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Showing content from https://realpython.com/courses/execute-python-scripts-with-shebang/discussion/ below:

Execute Your Python Scripts With a Shebang (Overview) (Video) – Real Python

In shell scripts, the shebang line (#!) specifies the path to the interpreter that should execute the file. You can place it at the top of your Python file to tell the shell how to run your script, allowing you to execute the script directly without typing python before the script name. The shebang is essential for Unix-like systems but ignored on Windows unless using specific compatibility layers.

By the end of this video course, you’ll understand that:

• A shebang specifies the path to the Python interpreter in scripts, allowing direct execution.
• You should include a shebang when a script needs direct execution, but not in import-only modules.
• Best practices for shebangs include using /usr/bin/env for portability and ensuring the script is executable.
• Shebangs have limitations, such as being ignored on Windows without compatibility layers like WSL.

Prerequisite resources linked in this lesson:

• Build Command-Line Interfaces With Python’s argparse
• How to Run Your Python Scripts and Code

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