Download this code from
Title: Executing Linux Shell Commands from Python Script: A Comprehensive Tutorial
Introduction:
In many cases, Python scripts need to interact with the underlying operating system, and one powerful way to achieve this is by executing Linux shell commands. This tutorial will guide you through the process of running shell commands from a Python script, covering various methods and considerations.
Prerequisites:
Method 1: Using the subprocess Module:
The subprocess module provides a simple and versatile way to interact with the system shell.
Method 2: Using Backticks:
While the use of backticks is not recommended for various reasons, it’s worth mentioning as it’s a common and straightforward way.
Method 3: Using the os Module:
The os module also allows running shell commands, although it’s generally less flexible than subprocess.
Method 4: Running Shell Scripts:
Executing entire shell scripts from Python is also possible.
Important Considerations:
Security:
Error Handling:
Capturing Output:
Asynchronous Execution:
Conclusion:
Executing Linux shell commands from Python provides a powerful way to extend your scripts’ capabilities. The subprocess module is recommended for its flexibility and enhanced features. Always prioritize security and error handling to create robust and reliable scripts.
ChatGPT
Certainly! Executing Linux shell commands from a Python script can be quite useful for automating tasks or interacting with the underlying operating system. In Python, you can use the subprocess module to achieve this. Below is a step-by-step tutorial with code examples.
In Python, the subprocess module provides a simple and consistent interface to create and interact with additional processes. Import this module at the beginning of your script.
The subprocess.run() function is a convenient way to run shell commands. It takes a list of command-line arguments as input.
In the example above, the subprocess.run() function runs the ls -l command, and the result object contains information about the command execution, including the return code.
If you want to capture the output of the command, you can use the subprocess.run() function with the capture_output=True argument.
In this example, result.stdout contains the standard output of the command.
You can also handle the input and output streams of a command using the subprocess.Popen class.
It’s important to handle exceptions when executing commands to capture errors or unexpected behavior.
You’ve now learned the basi
[ad_2]
source
