omsobliga’s gists

omsobliga / thread_with_join.py

Last active February 28, 2016 10:27

Child thread with join, main thread wait unit all child threads terminate.

	#!/usr/bin/env python
	# -- coding: utf-8 --

	""" Child threads with join

	Main thread wait unit all child threads terminate.
	"""

	import threading
	from time import sleep

omsobliga / mylogger.py

Last active August 29, 2015 14:12

Get a logger that can print to file and stream in one time.

	#!/usr/bin/env python
	# -- coding: utf-8 --

	import logging


	def get_logger():

	# Get a logger, default is the root logger.
	logger = logging.getLogger('mylogger')

omsobliga / unicode_escape.py

Last active June 19, 2021 05:54

Python 在什么情况下会输出 Unicode 字符串

	#!/usr/bin/env python
	# -- coding: utf-8 --

	""" 测试 Python 在什么情况下会输出 Unicode 字符串
	需要首先理解在 Python 中 Unicode 类型和 Unicode 字符串指的不是同一个东西。
	Unicode 字符串是 str 类型，但它的值的表现形式是 Unicode 编码形式。
	"""


	def printt(str):

omsobliga / node-and-npm-in-30-seconds.sh

Last active February 19, 2016 07:42 — forked from isaacs/node-and-npm-in-30-seconds.sh

Use one of these techniques to install node and npm without having to sudo. Discussed in more detail at http://joyeur.com/2010/12/10/installing-node-and-npm/ Note: npm >=0.3 is *safer* when using sudo.

	echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
	. ~/.bashrc
	mkdir ~/local
	mkdir ~/node-latest-install
	cd ~/node-latest-install
	curl http://nodejs.org/dist/node-latest.tar.gz \| tar xz --strip-components=1
	./configure --prefix=~/local
	make install # ok, fine, this step probably takes more than 30 seconds...
	curl -L https://www.npmjs.org/install.sh \| sh

omsobliga / multiple_processes.sh

Created March 15, 2016 15:13

Start multiple processes in shell

	# 查找出当前文件夹中以 x 开头的文件，文件名作为参数传给 python 脚本，然后放到后台执行
	for i in x*
	do
	python t.py $i &
	done

omsobliga / transaction.py

Created July 20, 2016 14:26

SQLAlchemy Transaction

	# http://docs.sqlalchemy.org/en/latest/core/connections.html#sqlalchemy.engine.Transaction

	from sqlalchemy import create_engine
	engine = create_engine("postgresql://scott:tiger@localhost/test")
	connection = engine.connect()
	trans = connection.begin()
	connection.execute("insert into x (a, b) values (1, 2)")
	trans.commit()

omsobliga / transaction_in_concurrent.py

Last active August 15, 2016 02:56

用多进程模拟数据库事务在并发环境下的表现

	#!/usr/bin/env python
	# -- coding: utf-8 --

	"""
	用多进程模拟数据库事务在并发环境下的表现。
	测试环境:
	一个数据库 server, 4 核机器, 四个进程
	运行结果::
	run 0 process
	run 1 process

omsobliga / cors_server.py

Last active July 24, 2018 03:20 — forked from enjalot/cors_server.py

Allow CORS with python simple http server

	# python cors_server.py

	import SimpleHTTPServer
	class CORSHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
	def send_head(self):
	"""Common code for GET and HEAD commands.

	This sends the response code and MIME headers.

	Return value is either a file object (which has to be copied

omsobliga / aes.py

Last active March 21, 2018 06:26

对称加密 AES

	#!/usr/bin/env python
	# -- coding: utf-8 --
	# 参考资料:
	# * https://en.wikipedia.org/wiki/Advanced_Encryption_Standard
	# * https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
	#
	# Show AES document:
	# > from Crypto.Cipher import AES
	# > help(AES)

omsobliga / rsa.py

Last active September 28, 2016 11:28

公开密钥加密 RSA

	#!/usr/bin/env python
	# -- coding: utf-8 --
	# 参考资料:
	# * https://en.wikipedia.org/wiki/RSA
	#
	# Show RSA document:
	# > from Crypto.PublicKey import RSA
	# > help(RSA)

	from Crypto.PublicKey import RSA

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