willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

bsweger

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

twolfson

alembic is great but lacks an out of the box way to set up running migrations against a specific database (e.g. development, test, production). The following adjustments to its env.py and alembic.ini allow us to target a specific database:

Example:

alembic -x db=development upgrade head

env.py:

scottjacobsen

SSH agent forwarding is great. It allows you to ssh from one server to
another all the while using the ssh-agent running on your local
workstation. The benefit is you don't need to generate ssh key pairs
on the servers you are connecting to in order to hop around.

When you ssh to a remote machine the remote machine talks to your
local ssh-agent through the socket referenced by the SSH_AUTH_SOCK
environment variable.

So you the remote server you can do something like: 

fabriceleal

' http://support.microsoft.com/kb/291296/en-us
' http://superuser.com/questions/130592/how-do-you-force-excel-to-quote-all-columns-of-a-csv-file
' - change integer to long indexing
' http://stackoverflow.com/questions/2524703/save-text-file-utf-8-encoded-with-vba
' - output utf8 content

Sub QuoteCommaExport()
    ' Dimension all variables.
    Dim DestFile As String
    Dim FileNum As Integer

christianroman

import cv2.cv as cv
import tesseract
gray = cv.LoadImage('captcha.jpeg', cv.CV_LOAD_IMAGE_GRAYSCALE)
cv.Threshold(gray, gray, 231, 255, cv.CV_THRESH_BINARY)
api = tesseract.TessBaseAPI()
api.Init(".","eng",tesseract.OEM_DEFAULT)
api.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyz")
api.SetPageSegMode(tesseract.PSM_SINGLE_WORD)
tesseract.SetCvImage(gray,api)
print api.GetUTF8Text()

sirkkalap

##########################################
# To run: 
# curl -sSL https://gist.githubusercontent.com/sirkkalap/e87cd580a47b180a7d32/raw/d9c9ebae4f5cf64eed4676e8aedac265b5a51bfa/Install-Docker-on-Linux-Mint.sh | bash -x
##########################################

# Check that HTTPS transport is available to APT
if [ ! -e /usr/lib/apt/methods/https ]; then
	sudo apt-get update
	sudo apt-get install -y apt-transport-https
fi

johnteske

{% include numberWithCommas.html number=1 %}
{% include numberWithCommas.html number=12 %}
{% include numberWithCommas.html number=123 %}
{% include numberWithCommas.html number=1234 %}
{% include numberWithCommas.html number=12345 %}
{% include numberWithCommas.html number=123456 %}
{% include numberWithCommas.html number=1234567 %}
{% include numberWithCommas.html number=12345678 %}
{% include numberWithCommas.html number=123456789 %}
{% include numberWithCommas.html number=1234567890 %}

burnto

"""
From http://www.authorize.net/support/merchant/Transaction_Response/Response_Reason_Codes_and_Response_Reason_Text.htm
"""

REASONS = [
    # resp code, reason code, reason text, notes
    [1, 1, "This transaction has been approved."],
    [2, 2, "This transaction has been declined."],
    [2, 3, "This transaction has been declined."],
    [2, 4, "This transaction has been declined.", "The code returned from the processor indicating that the card used needs to be picked up."],