imtaehyun

# https://www.quantopian.com/posts/technical-analysis-indicators-without-talib-code

import numpy  
import pandas as pd  
import math as m

#Moving Average  
def MA(df, n):  
    MA = pd.Series(pd.rolling_mean(df['Close'], n), name = 'MA_' + str(n))  
    df = df.join(MA)  

barbolo

References:

https://github.com/tesseract-ocr/tesseract/wiki/Compiling

http://stackoverflow.com/questions/33588262/tesseract-ocr-on-aws-lambda-via-virtualenv

https://github.com/sirfz/tesserocr

Instructions for running Tesseract OCR on AWS Lambda with Python

pnc

AWS Lambda allows you to run custom binaries as child processes.

However, if the packaged binary you're running on AWS Lambda uses shared libraries, they may not be available in the Lambda environment. If this is the case, your binary will terminate without any output. In my case, the exit status code was 127, which wasn't very helpful (typically this is "command not found.")

2015-11-18T00:50:10.731Z	521db901-8d8e-11e5-b9df-cd31cc90ece2	Calling phantom:  /var/task/phantomjs [ '/var/task/phantomjs-script.js' ]
2015-11-18T00:50:10.809Z	521db901-8d8e-11e5-b9df-cd31cc90ece2	child process exited with code 127

Linux's loader, ld.so, allows you (see manpage) to set an environment variable called LD_DEBUG that will output verbose information while the shared libraries are loaded.

Since Lambda doesn't let you set arbitrary environment variables, you need to set the environment

benjie

Long Live CoffeeScript and Long Live ES6

Clearly ES6 is a huge improvement over ES5, and tools like [6to5][] allow us to use these cool features now. I was reading [Replace CoffeeScript with ES6][replace coffeescript] by [Blake Williams][] and thought it was a great summary of how ES6 solves many of the same problems that CoffeeScript solves; however I'd like to comment on a few of Blake's points and talk about why I'll be sticking with CoffeeScript.

Classes

Classes in ES6 (like many of the syntax changes in ES6) are very similar to the CoffeeScript equivalent. To support browsers that are not fully ES5 compliant (e.g. IE8-), however, we still can't really use getters/setters, so ignoring these the comparison is:

joshmarshall

from cassandra.cluster import Cluster, OperationTimedOut
from cassandra.decoder import SyntaxException

from tornado.concurrent import Future
from tornado.testing import AsyncTestCase, gen_test


class TornadoCassandra(object):

    def __init__(self, session, ioloop):

lbolla

import sys
import tornado.ioloop
import psycopg2
import psycopg2.extensions

io_loop = tornado.ioloop.IOLoop.instance()
conn = psycopg2.connect('dbname=mytest user=lbolla password=secret')
conn.set_isolation_level(psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT)

dbrgn

# -*- coding: utf-8 -*-
"""
    ReST directive for embedding Youtube and Vimeo videos.

    There are two directives added: ``youtube`` and ``vimeo``. The only
    argument is the video id of the video to include.

    Both directives have three optional arguments: ``height``, ``width``
    and ``align``. Default height is 281 and default width is 500.