simon-liu

def ensure_dir(f):
    d = os.path.dirname(f)
    if not os.path.exists(d):
        os.makedirs(d)

    return os.path.exists(f)

simon-liu

def get_client_ip(request):
    x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
    if x_forwarded_for:
        ip = x_forwarded_for.split(',')[0]
    else:
        ip = request.META.get('REMOTE_ADDR')
    return ip

simon-liu

def chunks(l, n):
    """Yield successive n-sized chunks from l."""
    for i in range(0, len(l), n):
        yield l[i:i + n]

simon-liu

import logging


def config_logging(
        filename,
        format='[%(asctime)s] %(levelname)s [%(name)s:%(lineno)s] %(message)s',
        datefmt='%d/%b/%Y %H:%M:%S',
        level=logging.INFO):
    logging.basicConfig(
        filename=filename,

simon-liu

import subprocess


def run(cmd):
    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
    (output, err) = p.communicate()
    if err:
        raise RuntimeError()

    return output.decode('utf8').strip()

simon-liu

sed -i -- 's/hello/moto/g' **/*(D.)

sed -i 's/hello/moto/g' file.txt

find /home/bruno/old-friends -type f -exec sed -i 's/ugly/beautiful/g' {} \;

simon-liu

def connect_db(path):
    con = sqlite3.connect(path)
    con.row_factory = sqlite3.Row
    return con

simon-liu

from os.path import expanduser
home = expanduser("~")

simon-liu

// ==UserScript==
// @name        block-operator-ad
// @namespace   liuzenglu
// @description block-operator-ad
// @version     1
// @grant       none
// ==/UserScript==

if (window.location.href.startsWith("http://")) {
  var black_list = new Array(