How to run Python script in Linux system and get the results

How to run a Python script in a Linux system and get the results

When using a Linux system to develop and run Python scripts, we often need to run a script and get its results operation result. This article will introduce how to run a Python script in a Linux system and obtain its output. Below are the specific steps and sample code.

1. Create a Python script
   First, we need to create a Python script as an example. Suppose we want to create a simple script that calculates the sum of two numbers. Create a file called "sum.py" in the terminal using any text editor and enter the following code:

# sum.py

def sum_numbers(a, b):
    return a + b

result = sum_numbers(5, 3)
print("The sum is:", result)

Save and close the file.

2. Add executable permissions to the script
   Use the following command in the terminal to add executable permissions to the script:

chmod +x sum.py

3. Run the script and get the results
   Use the following command to run the script in the terminal and get its output:

./sum.py

You will see the following output:

The sum is: 8

In this way, you will successfully Run the Python script on the Linux system and obtain the results.

4. Get the script output result
   If you want to save the script output result to a variable for further processing, you can use the subprocess module subprocess to achieve this. The following is a sample code:

# execute_script.py

import subprocess

script_output = subprocess.check_output(["./sum.py"]).decode("utf-8")
print("Script output:", script_output)

In this example, first import the subprocess module, and then use the check_output function to run the script and get its output. Note that we use the decode function to convert the output from a byte stream to a string and print it out.

Save and close the file.

5. Run the execution script and get the results
   Use the following command to run the execution script in the terminal and get its output results:

python execute_script.py

You will see the following Output result:

Script output: The sum is: 8

In this way, you have successfully run the Python script in the Linux system and obtained its output through the child process.

Summary:
In a Linux system, we can run a Python script and obtain its output in simple steps. First, we need to add executable permissions to the script. You can then run the script directly in the terminal and view the output. If you want to save the output results to a variable, you can use the check_output function of the subprocess module subprocess to accomplish this. I hope this article can help you use Python scripts to run and obtain results in Linux systems.

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