linkerlin’s gists

linkerlin / header.py

Created January 23, 2013 09:03

A general header for Python files.

	#! -- coding:utf-8 --

	import sys
	reload(sys)
	sys.setdefaultencoding('utf-8')

linkerlin / jyswing.py

Created January 23, 2013 10:50

A demo for jython and swing

	#! -- coding:utf-8 --

	import sys
	reload(sys)
	sys.setdefaultencoding('utf-8')
	print sys.defaultencoding,u"中文"


	from java.awt import Color
	from javax.swing import ImageIcon

linkerlin / cached.py

Created January 24, 2013 13:53

A cache decorator with a ability of lossing memory .


	def cached(function):
	cache = {}
	def wrapper(*args):
	if args in cache:
	ret=cache[args]
	if random.randint(1,100)>95: memo.pop(args) # random forget something
	return ret
	else:
	result = function(*args)

linkerlin / classpathhacker.py

Last active December 11, 2015 20:18

A jar loader for jython. If you want add some jars to JVM in Jython, you can use the following class. Modified from: http://www.jython.org/jythonbook/en/1.0/appendixB.html#working-with-classpath 这是一个修改版本的classPathHacker，用于在Jython里加载一个Jar给Java Code使用。不同于在sys.path里面添加jar。此方法可以让JavaCode也使用到新加载的Jar，而不仅仅是JythonCode. 添加sys.path的方法参见：http://my.oschina.…

	class ClassPathHacker :
	##########################################################
	# from http://forum.java.sun.com/thread.jspa?threadID=300557
	#
	# Author: SG Langer Jan 2007 translated the above Java to this
	# Jython class
	# Modified by: Linker Lin [email protected]
	# Purpose: Allow runtime additions of new Class/jars either from
	# local files or URL
	######################################################

linkerlin / jymysql.py

Created January 28, 2013 15:15

A demo for using mysql in Jython.

	from __future__ import with_statement
	from com.ziclix.python.sql import zxJDBC

	import sys
	#sys.path+=[r'/home/linker/jars/mysql-connector-java.jar']
	#sys.path+=[r'/home/linker/jarss/']
	from classpathhacker import *
	jarloader=classPathHacker()
	#jarloader.addFile(r'/home/linker/jars/mysql-connector-java.jar')

linkerlin / jarimport.py

Last active December 11, 2015 21:19

A jar importor for Jython. You only need to add a fullpath of a jar to sys.path , then you can use "Class.forName()". Need classpathhacker.py https://gist.github.com/4654376

	import imp
	import os
	import sys
	from marshal import Unmarshaller
	from classpathhacker import *
	jarloader=ClassPathHacker()

	__debugging__ = True

	def __readPycHeader(file):

linkerlin / gist:5720106

Created June 6, 2013 08:23

Caches library for Python 2.7

	import collections
	import functools
	from itertools import ifilterfalse
	from heapq import nsmallest
	from operator import itemgetter


	class Counter(dict):
	'Mapping where default values are zero'

linkerlin / MetaClass.py

Last active December 18, 2015 05:39

Python的计时用metaclass 。演示了Meta Class的用法。

	class Profiler(type):
	def __new__(mcl, name, bases, dict):
	from time import clock
	from types import FunctionType

	def timing(func):
	def wrapper(args, *kwds):
	start = clock()
	value = func(args, *kwds)
	end = clock()

linkerlin / with_timer.py

Last active December 19, 2015 16:09

一个简单的Python计时器

	class Timer(object):
	def __init__(self, name):
	print("%s: " % name, end="")
	def __enter__(self):
	self.t0 = time.time()
	def __exit__(self, *args):
	print("%.3fs" % (time.time() - self.t0))

	with Timer("XXX"):
	call_function()

linkerlin / m.groovy

Last active December 20, 2015 04:39

Groovy and load a jar

	this.class.classLoader.rootLoader.addURL(new URL("file:////Users/linkerlin/.m2/repository/mysql/mysql-connector-java/5.1.21/mysql-connector-java-5.1.21.jar"))
	import groovy.sql.Sql
	sql = Sql.newInstance("jdbc:mysql://localhost:3306/test", "root", "", "com.mysql.jdbc.Driver")
	sql.eachRow("SELECT id, username FROM users")
	{
	println "The employee's name is ${it.username}"
	}

	// Or using grape
	@GrabConfig(systemClassLoader=true) // this is very important...

Halo Master linkerlin