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Testing print/log statements in pytest can be a bit tricky, capsys makes it super easy, but I often struggle to find it. capsys # [1] capsys is a builtin pytest fixture that can be passed into any test to capture stdin/stdout. For a more comprehensive description check out the docs on capsys [2] using capsys # [3] Simply create a test function that accepts capsys as an argument and pytest will give you a capsys opject. def test_print(capsys): print('hello') captured = capsys.readouterr() assert 'hello' in captured.out print('world') captured = capsys.readouterr() assert 'world' in captured.out References: [1]: #capsys [2]: https://docs.pytest.org/en/stable/capture.html#accessing-captured-output-from-a-test-function [3]: #using-capsys

Draft Post I’ve really been digging [1]@willmcgugan [2]’s rich [3] library for creating TUI like interfaces in python. I’ve only recently started to take full advantage of it. Dev Server # [4] I am working on a project in which I want to have a dev server running continuously in the background. I really like dev servers theat automatically chooose an unused port and list out the running pid so that I can kill it if I need to. - automatic port number - auto-restart - display ( port, pid, uptime ) finding the port # [5] I am very novice at best when it comes to sockets, the following function came from searching StackOverflow for how to tell if a port is in use. I recursively check if a port is being used, if it is I increment by one until I find an unused port to return. def find_port(port=8000): """Find a port not in ues starting at given port""" import socket with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: if s.connect_ex(("localhost", port)) == 0: retur...