run python script command line
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running python scripts from the command line provides a flexible and efficient way to execute your code. this tutorial will guide you through the process of running python scripts using the command line interface (cli), including basic command syntax and examples.
before you start, ensure that you have python installed on your system. you can download the latest version from the official python website (https://www.python.org/downloads/).
let's begin by creating a simple python script. open your preferred text editor and create a new file named hello.py. add the following code:
this script prints the classic "hello, world!" message to the console.
use the cd command to navigate to the directory where your python script is located. for example:
to run the hello.py script, use the following command:
if you're using python 3, replace python with python3:
you should see the "hello, world!" message printed to the console.
python scripts can accept command line arguments. let's modify our script to take a command line argument and print it:
in this script, sys.argv is a list that contains the script name and any command line arguments provided. the script checks if there's at least one argument and prints a personalized greeting.
now, run the script with an argument:
or with python 3:
the output should be "hello, john!" or "hello, alice!" depending on the argument provided.
congratulations! you've learned the basics of running python scripts from the command line. this knowledge is valuable for automation, scripting, and various development tasks. experiment with different scripts and command line options to enhance your python experience.
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