python subprocess wait until finished
Instantly Download or Run the code at https://codegive.com
title: python subprocess - waiting until finished (tutorial)
introduction:
the subprocess module in python allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. in some cases, it is necessary to wait for a subprocess to finish before proceeding with the main program. this tutorial will guide you through using the subprocess module to execute a command and wait until it is finished.
step 1: import the subprocess module
step 2: use the subprocess.run() function
the subprocess.run() function is a high-level function that simplifies the process of running a command and waiting for it to complete.
example:
in this example, the ls -l command is executed, and the return code is checked. a return code of 0 generally indicates success, while a non-zero value indicates an error.
step 3: customize subprocess.run() options
you can customize the behavior of subprocess.run() by providing additional parameters. for example, you can capture the output, redirect input/output/error, set a timeout, and more.
example with output capture:
step 4: use subprocess.popen() for more control
if you need more control over the subprocess, you can use subprocess.popen(). this function returns a popen object, which gives you access to the process's input/output/error streams and allows you to wait for the process to finish.
example:
conclusion:
using the subprocess module in python, you can easily execute external commands and wait for their completion. whether you prefer the simplicity of subprocess.run() or the flexibility of subprocess.popen(), python provides powerful tools for interacting with external processes.
chatgpt
...
#python thread finished callback
#python check thread finished
#python qthread finished signal
#python process finished with exit code
#python subprocess finished
Related videos on our channel:
python thread finished callback
python check thread finished
python qthread finished signal
python process finished with exit code
python subprocess finished
python wait until finished
python thread finished
python threadpoolexecutor check finished
python finished projects
python sound when finished
python subprocess run
python subprocess example
python subprocess popen
python subprocess check_output
python subprocess stdout
python subprocess capture output
python subprocess
python subprocess pipe
