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def grouper(group_membre_number, the_list, default=None):
    return map(default, *(iter(the_list), ) * group_membre_number)

def build_dict(group_list):
    result = {}

    for group in group_list:
        temp = iter(group[1:])
        result[group[0]] = dict(zip(temp, temp))

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# replace rm command with mv to Trash to protect remove files or directory miss
function __protect_rm {
    mv ${@: -1} ~/.Trash   #get last function argument
}
alias rm='__protect_rm'

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

class Enum(object):
    """Enum simulation class with auto increment id
    
    >>> a = Enum(['type_1', 'type_2', 'type_3'])
    >>> a.type_1
    1
    >>> a['type_1']

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

class A(object):
    def __init__(self, key):
        print 'A key', key
    
    @classmethod
    def foo(cls):
        print 'A foo'

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

class A(object):
    def __init__(self):
        print 'A init'
    
    @classmethod
    def foo(cls):
        print 'A foo'

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#!/bin/sh

echo
count=0

echo "Scanning...Conflict Files List:"
for f in `git diff HEAD --name-only --diff-filter=M`; do
    if [ -f $f ]; then
        if grep -Fxq "<<<<<<<" $f; then
            echo "    $(tput setaf 1)$f$(tput sgr0)"

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# auto ssh-add
SSH_ENV="$HOME/.ssh/environment"

function start_agent {
     echo "Initialising new SSH agent..."
     /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
     echo succeeded
     chmod 600 "${SSH_ENV}"
     . "${SSH_ENV}" > /dev/null
     /usr/bin/ssh-add;

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# swift alias
alias swift='/Applications/Xcode6-Beta3.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift'

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Digest from here.

The general way, if weights is a sorted list, it will be faster:

def weighted_choice_sub(weights):
    rnd = random.random() * sum(weights)
    for i, w in enumerate(weights):
        rnd -= w
        if rnd < 0:
 return i

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// Exercise: Loops and Functions
package main

import (
	"fmt"
)

func Sqrt(x float64) float64 {
	z := 1.0
	for i := 0; i < 10; i++ {