python script on command line
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python is a versatile programming language, and you can leverage its power by creating command-line scripts for various tasks. in this tutorial, we'll walk through the process of creating a simple python script that can be executed from the command line.
before we start, make sure you have python installed on your system. you can download python from python.org. additionally, a basic understanding of the command line will be helpful.
open your favorite text editor or integrated development environment (ide) and create a new python script. for this tutorial, let's name it myscript.py.
in this example, we define a simple function main() that prints a greeting. the if _name_ == "__main__": block ensures that the main() function is executed when the script is run directly.
save your python script (myscript.py) in a directory of your choice.
open your command-line interface (terminal on macos/linux or command prompt on windows).
use the cd command to navigate to the directory where you saved your python script.
replace path/to/script/directory with the actual path to the directory where your script is located.
now, you can run your python script from the command line by typing:
if you're using python 3, use:
you should see the output:
congratulations! you've just executed your first python script from the command line.
let's enhance our script by accepting command-line arguments. we can use the sys module to achieve this.
in this example, we check if there are command-line arguments provided. if arguments exist, we use the first argument as the name to greet; otherwise, we print a generic greeting.
now, you can run the script with a name argument:
...
#python command line input
#python command line args
#python command line arguments
#python commands list
#python command line
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