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@adamnew123456
adamnew123456 / arithmetic.py
Last active February 11, 2024 15:49
Pratt Parser For Arithmetic Expressions
"""
This implements a fairly simple expression language via a Pratt-style parser.
The language supports fairly standard floating point literals, such as:
5
1.09
.16
12e7
@glombard
glombard / combine.py
Created November 24, 2014 00:22
Merging 4 images into one with Python and PIL/Pillow
# Combine multiple images into one.
#
# To install the Pillow module on Mac OS X:
#
# $ xcode-select --install
# $ brew install libtiff libjpeg webp little-cms2
# $ pip install Pillow
#
from __future__ import print_function
@jbardin
jbardin / proxy_copy.go
Last active June 28, 2023 22:12
Go TCP Proxy pattern
package proxy
import (
"io"
"log"
"net"
)
func Proxy(srvConn, cliConn *net.TCPConn) {
// channels to wait on the close event for each connection
@typehorror
typehorror / Flask-SQLAlchemy Caching.md
Last active February 15, 2024 14:44
Flask SQLAlchemy Caching

Flask-SQLAlchemy Caching

The following gist is an extract of the article Flask-SQLAlchemy Caching. It allows automated simple cache query and invalidation of cache relations through event among other features.

Usage

retrieve one object

# pulling one User object

user = User.query.get(1)

@cloverstd
cloverstd / cache.py
Last active October 27, 2021 05:35
tornado cache
# coding: utf-8
try:
import cPickle as pickle
except ImportError:
import pickle
try:
import hashlib
sha1 = hashlib.sha1
@yetithefoot
yetithefoot / stuns
Last active April 2, 2024 10:49 — forked from zziuni/stuns
STUN+TURN servers list
{url:'stun:stun01.sipphone.com'},
{url:'stun:stun.ekiga.net'},
{url:'stun:stun.fwdnet.net'},
{url:'stun:stun.ideasip.com'},
{url:'stun:stun.iptel.org'},
{url:'stun:stun.rixtelecom.se'},
{url:'stun:stun.schlund.de'},
{url:'stun:stun.l.google.com:19302'},
{url:'stun:stun1.l.google.com:19302'},
{url:'stun:stun2.l.google.com:19302'},
@justjavac
justjavac / img2txt.js
Last active December 9, 2021 06:46
img2txt：基于canvas的图片转字符画工具
var cv = document.getElementById('cv');
var c = cv.getContext('2d');
var txtDiv = document.getElementById('txt');
var fileBtn = document.getElementById("up-button");
var img = new Image();
img.src = 'a.jpg';
img.onload = init; // 图片加载完开始转换
fileBtn.onchange = getImg;
// 根据灰度生成相应字符
@jhjguxin
jhjguxin / nginx-403-forbidden-error-hosting-in-user-home-directory.md
Created August 12, 2013 05:40
nginx 403 forbidden error when server static file under user home directory
@floer32
floer32 / centos_python_env_setup
Last active May 2, 2022 03:47 — forked from stantonk/doit
CentOS 6: Install Python 2.7.4, pip, virtualenv, and virtualenvwrapper on CentOS (plus some bonus items at the end if you want). You should probably run with `sudo`.
#!/bin/bash
# Source: http://toomuchdata.com/2012/06/25/how-to-install-python-2-7-3-on-centos-6-2/
# Install stuff #
#################
# Install development tools and some misc. necessary packages
yum -y groupinstall "Development tools"
yum -y install zlib-devel # gen'l reqs
@stantonk
stantonk / doit
Created November 15, 2012 22:46
Install python 2.7.3 on CentOS 5.8
#!/bin/bash
# Source: http://toomuchdata.com/2012/06/25/how-to-install-python-2-7-3-on-centos-6-2/
yum groupinstall "Development tools"
yum install zlib-devel
yum install bzip2-devel openssl-devel ncurses-devel
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2
tar xf Python-2.7.3.tar.bz2
cd Python-2.7.3