run python code in background

Veröffentlicht am: 21 Januar 2024
auf dem Kanal: CodeTwist

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Running Python code in the background can be useful in various scenarios, such as when you want to execute a long-running task or a script without tying up your terminal or when you need a process to continue running even after you close your terminal session. In this tutorial, we'll explore different methods to run Python code in the background on Unix-like systems (Linux/macOS) using the terminal.
The simplest way to run a Python script in the background is by appending an ampersand (&) at the end of the command. Here's an example:
This will execute the Python script script.py in the background. Keep in mind that the script should not expect any input from the terminal, as it won't be able to interact with the user.
The nohup command stands for "no hang up" and is used to run a command immune to hangups, with output to a non-tty (non-terminal). This is particularly useful for running scripts that have long execution times. Here's an example:
This will run the Python script script.py in the background, and the output will be redirected to a file named nohup.out in the same directory.
If you need more control over background processes and want to be able to reattach to them later, you can use terminal multiplexers like screen or tmux. These tools allow you to create and manage multiple terminal sessions. Here's an example using screen:
Start a new screen session:
Run your Python script inside the screen session:
Detach from the screen session by pressing Ctrl + A, then D.
To reattach to the session later, use:
Replace mysession with your actual session name.
If you're running a Linux distribution that uses systemd, you can create a systemd service to run your Python script in the background. Create a service file, e.g., `myservic

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