garcia’s gists

garcia / gifpalettes.py

Created September 17, 2012 06:47

Losslessly rotate a GIF's hue 180 degrees

	#!/usr/bin/env python
	import colorsys
	import struct
	import sys

	f_in = open(sys.argv[1], 'rb')
	f_out = open(sys.argv[2], 'wb')
	# check header
	if f_in.read(3) != 'GIF':
	raise TypeError('not a GIF')

garcia / autotumble.py

Last active February 9, 2018 15:16

Automatically follow Tumblr users who post in the #follow-back tag and reblog posts from the Dashboard. Requires python-oauth2, a Tumblr blog, a Tumblr appication's consumer key/secret pair, and an authentication key/secret pair for the blog / application. Potentially useful for future social engineering escapades.

	#!/usr/bin/env python
	import itertools
	import json
	import logging
	import sys
	import time
	import traceback

	# oauth2 is available at https://github.com/simplegeo/python-oauth2
	import oauth2

garcia / theultimateoneliner.py

Last active December 12, 2015 09:39

A one-liner that converts any Python script to a one-liner. There are no literal semicolons in this script or its output (i.e. it doesn't cheat).

print'exec '+(lambda L,R:lambda C:R(L,R,C))((lambda L,R,c:'type((lambda:0).__code__)(%s)'%','.join(R(L,R,getattr(c,'co_'+n))for n in'argcount:nlocals:stacksize:flags:code:consts:names:varnames:filename:name:firstlineno:lnotab:freevars:cellvars'.split(':'))),(lambda L,R,o:L(L,R,o)if type(o).__name__=='code'else'('+''.join(R(L,R,n)+','for n in o)+')'if type(o).__name__=='tuple'else repr(o)))((lambda n:compile(open(n,'r').read(),n,'exec'))(__import__('sys').argv[-1]))

garcia / imgurwords.py

Created July 12, 2013 05:55

Source for imgurwords.tumblr.com. Written in 30 minutes. Reuses some components of autotumble.py.

	#!/usr/bin/env python
	import json
	import pickle
	import pprint
	import sys
	import time
	import traceback

	import oauth2
	import requests

garcia / savephotos.py

Last active December 4, 2018 00:27

Save all photos from the tumblelog specified on the command-line using the Tumblr API v1. Requires the Python 'requests' module. Updated for a breaking API change and Python 3 support in 2018.

	#!/usr/bin/env python
	import argparse
	import errno
	import itertools
	import json
	import os
	import requests
	import time

	WIDTHS = (1280, 500, 400, 250, 100, 75)

garcia / oppositeday.py

Created November 2, 2013 22:29

Swaps the values of False and True under CPython 2.7.5. Unlike the usual "False, True = True, False" prank, this alters the hardcoded values so that even built-in operations which return a boolean (like 1 == 1) return the opposite.

	import ctypes
	import sys

	for b, boolean in enumerate((False, True)):
	(ctypes.c_char * sys.getsizeof(boolean)).from_address(id(boolean))[8] = chr(1 - b)

garcia / selfreferencingtuple.py

Last active December 31, 2015 23:58

Self-referencing tuple in 32-bit CPython 2.7.

	import ctypes
	import struct
	import sys

	# Goal: obtain something like "outer = (outer,)", even though that's impossible with vanilla Python
	inner = ()
	outer = (inner,)

	# Get CPython's internal representation of the outer tuple
	c_outer = (ctypes.c_char * sys.getsizeof(outer)).from_address(id(outer))

garcia / curry.py

Last active August 29, 2015 13:57

	#!/usr/bin/env python

	def curry(f, args=None):
	def curried(arg):
	if args is None:
	args_ = []
	else:
	args_ = args
	args_.append(arg)
	if len(args_) == f.__code__.co_argcount:

garcia / plusorminus.py

Created January 31, 2015 04:37

Implements a plus-or-minus "operator", +OR-

	import itertools
	import math

	class _OR(object):
	def __radd__(self, lhs):
	if isinstance(lhs, PlusOrMinus):
	copy = PlusOrMinus(*lhs)
	else:
	copy = PlusOrMinus(lhs)
	copy.plusorminus = True

garcia / keybase.md

Created January 31, 2017 04:46

Keybase proof

I hereby claim:

I am garcia on github.
I am garcia (https://keybase.io/garcia) on keybase.
I have a public key whose fingerprint is D67C C76B 1CAE 1DB0 E55E 3465 EA5C 38CB F9A6 0617

To claim this, I am signing this object:

Ash Garcia garcia

Keybase proof