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Running external commands or scripts as subprocesses is a common task in Python. Sometimes, you need to capture the output generated by these subprocesses for further processing or analysis. This tutorial will guide you through the process of executing a subprocess in Python and collecting its output.
The subprocess module in Python provides a powerful way to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. Start by importing this module:
Specify the command you want to run as a subprocess. For this example, let's use a simple command that prints "Hello, Subprocess!" to the console.
You can replace this command with any other command or script you want to run.
Use the subprocess.run() function to execute the command and capture the output. Set the capture_output parameter to True to capture both the standard output and standard error streams.
In this example:
The output can be accessed using the stdout attribute of the CompletedProcess object returned by subprocess.run().
If you also want to capture the standard error output, you can access it using the stderr attribute.
It's good practice to check the return code to determine if the subprocess was successful. A return code of 0 usually indicates success.
Here's the complete example:
Feel free to modify the command variable and adapt the code to suit your specific use case.
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