Ahmed Elsabbahy aelsabbahy

Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides and pycon US 2015 video

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

	/* Ultra lightweight Github REST Client */
	// original inspiration via https://gist.github.com/v1vendi/75d5e5dad7a2d1ef3fcb48234e4528cb
	const token = 'github-token-here'
	const githubClient = generateAPI('https://api.github.com', {
	headers: {
	'User-Agent': 'xyz',
	'Authorization': `bearer ${token}`
	}
	})

	from threading import BoundedSemaphore
	from concurrent.futures import ProcessPoolExecutor


	class MaxQueuePool:
	"""This Class wraps a concurrent.futures.Executor
	limiting the size of its task queue.

	If `max_queue_size` tasks are submitted, the next call to submit will block
	until a previously submitted one is completed.

	#!/bin/bash -e
	####
	# based on https://gist.github.com/jeffery/1115504
	# Helper script to update the Last modified timestamp of files in a Git SCM
	# Projects working Copy
	#
	# When you clone a Git repository, it sets the timestamp of all the files to the
	# time when you cloned the repository.
	#
	# This becomes a problem when you want the cloned repository, which is part of a

	Relevant section from ''man bash'', SIGNALS:

	> The shell exits by default upon receipt of a SIGHUP. Before exiting, an interactive shell resends the SIGHUP to all jobs,
	> running or stopped. Stopped jobs are sent SIGCONT to ensure that they receive the SIGHUP. To prevent the shell from send‐
	> ing the signal to a particular job, it should be removed from the jobs table with the disown builtin (see SHELL BUILTIN
	> COMMANDS below) or marked to not receive SIGHUP using disown -h.
	>
	> If the huponexit shell option has been set with shopt, bash sends a SIGHUP to all jobs when an interactive login shell
	> exits.

	FROM nginx
	HEALTHCHECK --interval=3s --retries=20 CMD curl -fs http://localhost:${HTTP_PORT:-8000}