notes/technology/python

pip install from git repository

Notes | 2025-04-14 (updated 2025-10-25) | 1 min read
#git #pip #python

Install a pip package from a git repo, using a specified git reference:

Handling signals with Python

Notes | 2023-05-10 (updated 2025-10-25) | 2 min read
#python

When building a Python script that is long running or has to manage some state on termination it is helpful to handle a couple of signals:

SIGINT: The signal sent when pressing Ctrl+C
SIGTERM and SIGQUIT: Meant to terminate the process, sent by kill and process managers like systemd or supervisord

Handling them is possible with Pythons signals library:

import signals

class SignalHandler:
    stop = False

    def __init__(self):
        # Ctrl+C
        signal.signal(signal.SIGINT, self.exit_gracefully)

        # Supervisor/process manager signals
        signal.signal(signal.SIGTERM, self.exit_gracefully)
        signal.signal(signal.SIGQUIT, self.exit_gracefully)

    def exit_gracefully(self, *args):
        self.stop = True

Example 1: Simple loop

The simplest example is using the SignalHandler as the condition on the loop and have code to stop gracefully below the loop.

Python

Notes | 2020-01-01 (updated 2025-10-25) | 1 min read
#python #slashpage-uses

These days Python is my language of choice for both simple scripts and more complex backend applications, usually in combination with [[django]]