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Windows
copy /b file1+file2 destfile

Linux 
cat file1+file2 > destfile

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#!/usr/bin/env python
# -*- coding: utf-8 -*-s
from pyPdf import PdfFileWriter, PdfFileReader
from optparse import OptionParser


def mergepdf(outputfile, filestobemerged):
     output = PdfFileWriter()
     for infile in filestobemerged:
        # Read the input PDF file

Alquimista

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

from itertools import *


l = [[1, 2], [3, 4]]
print(list(chain(*l)))

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

#http://pythonnewbie.wordpress.com
#/2011/01/12/split-a-list-using-python-zip-function/

mylist = [1,2,3,4,5,6,7,8,9,10]
j = 5
print zip(*[iter(mylist)]*j)  #prints [(1, 2, 3, 4, 5), (6, 7, 8, 9, 10)]
j = 2

Alquimista

openscad -o render.png  --imgsize=2048,2048 assembly.scad
convert render.png -resize 512x512 render.png

Alquimista

class CaseInsensitiveDict(dict):
    def __setitem__(self, key, value):
        super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)

    def __getitem__(self, key):
        return super(CaseInsensitiveDict, self).__getitem__(key.lower())

Alquimista

def run_command(command):
    process = subprocess.Popen(shlex.split(command), stdout=subprocess.PIPE)
    while True:
        output = process.stdout.readline()
        if output == '' and process.poll() is not None:
            break
        if output:
            self.logger.info(output.strip())
    rc = process.poll()
    return rc

Alquimista

alias pcalc="python -ic 'from __future__ import division;from math import *,from cmath import *'"

Alquimista

def compare(a, b):
  return list(frozenset(a).intersection(b))

Alquimista

python -c "import SimpleHTTPServer, SocketServer, BaseHTTPServer; SimpleHTTPServer.test(SimpleHTTPServer.SimpleHTTPRequestHandler, type('Server', (BaseHTTPServer.HTTPServer, SocketServer.ThreadingMixIn, object), {}))" 9090