python wait until subprocess finished

Veröffentlicht am: 21 Februar 2024
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sure, let's create a tutorial on how to wait for a subprocess to finish in python.
in python, the subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. often, you may need to wait for a subprocess to finish before proceeding with the rest of your code. here's a step-by-step tutorial on how to achieve this.
start by importing the subprocess module in your python script.
specify the command you want to execute as a subprocess. for example, let's use a simple command to print "hello, subprocess!".
use the subprocess.run() function to run the subprocess command. this function will wait for the subprocess to finish before returning.
if you want to capture the return code of the subprocess, you can store the result of subprocess.run() in a variable.
the return code is stored in the returncode attribute of the result object. you can check this value to determine if the subprocess executed successfully.
this example demonstrates how to run a subprocess, wait for it to finish, and check its return code. you can replace the subprocess_command with any command you want to execute as a subprocess.
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