Pavel Repin paxan

Let's say you are creating a RESTful web service that typically sees JSON requests and responds with JSON back. When things go wrong, default errors that Flask/Werkzeug respond with are all HTML. Which breaks the clients who expect JSON back even in case of errors.

Here's an approach to mitigate this. All errors that Werkzeug may throw are now intercepted and converted into JSON response. You can customize what goes into the response by tweaking the line with response = jsonify(...).

Also note that make_json_error will be used when your code throws an arbitrary exception (e.g. division by zero) not derived from HTTPException.

Moved to a proper Git repository.

Intro

Sometimes you may want a better way to inspect/review Git diffs than what GitX and other tools provide (which is basically a glorified pretty printed linear view of diff hunks).

If you're on a Mac, try ["gdiff" shell script.][1] It's a wrapper that launches OS X FileMerge application to inspect diffs.

Installation

Just place gdiff somewhere in your PATH, chmod +x it too.

Usage

You should invoke gdiff just like git diff from inside a repo directory.

	#!/usr/bin/env python

	import paste.httpserver

	form = """\
	<html>
	<body>
	<form method="post" enctype="multipart/form-data" action="/">
	<input type="file" name="photopicker" />
	<input type="submit" />

	;; There's something similar (but fancier) in vc-git.el: vc-git-grep
	;; -I means don't search through binary files
	(defcustom git-grep-switches "--extended-regexp -I -n --ignore-case"
	"Switches to pass to `git grep'."
	:type 'string)

	(defcustom git-grep-default-work-tree (expand-file-name "~/Documents/src/kits")
	"Top of your favorite git working tree. \\[git-grep] will search from here if it cannot figure out where else to look."
	:type 'directory
	)

	# Remixed from: http://www.dabeaz.com/coroutines/cosax.py
	# Don't shy away from reading http://www.dabeaz.com/coroutines/ if the stuff below
	# seems super weird.

	from xml.sax import ContentHandler, parse
	from collections import namedtuple

	ElementStart = namedtuple('ElementStart', 'name attrs')
	ElementEnd = namedtuple('ElementEnd', 'name')

	from __future__ import absolute_import

	import inspect
	from contextlib import contextmanager

	class PublicDecorator(object):
	"""
	The global instance of this class, public, provides the mechanism
	for managing __all__ list, thus liberating developers from
	error-prone maintenance of __all__ by hand.

	if True:
	import gunicorn # Exhibit A
	else:
	import gunicorn.glogging # Exhibit B

	class MyLogger(gunicorn.glogging.Logger):
	pass

	def app(environ, start_response):
	data = "Hello, World!\n"

	# --conf-space--

	# This screenrc file was obtained as-is from Pavel's friend
	# Eric Hanchrow (https://github.com/offby1). It just works!
	# Typical screen installations use Control-A to access screen
	# functions, but this one uses Control-Z. As far as I know,
	# it's the same as a typical screen setup in every other way.

	# This seems to interfere least with Emacs
	escape ^Zz

	---
	layout: post
	title: Boom!
	category: posts
	---

	# Repro

	Here's a code example: