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import itertools
import random

def fillfull(chars, width):
    length = len(chars)
    full = length ** width
    for i in range(full):
        one = ""
        for j in range(width):
            one += chars[i%length]

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s="4963654354467b66616c6c735f61706172745f736f5f656173696c795f616e645f7265617373656d626c65645f736f5f63727564656c797d"
step=2
print("".join([chr(int("".join(s[i:i+step]),16)) for i in range(0,len(s),step)]))
# or 
print(bytes.fromhex(s).decode('utf-8'))

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# Don't get me wrong, I love pretty colors as much as the next guy...   but what does it mean? pretty_pixels.png
# https://static2.ichunqiu.com/icq/resources/fileupload/CTF/IceCTF/stego/pretty.png

from PIL import Image
from sys import stdout

img = Image.open('pretty.png')

x_size, y_size = img.size

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import random

def randsums(nrange, count):
    l = []
    for i in range(count):
        # print(nrange)
        if i == count-1:
            l.append(nrange[-1])
        else:
            r = random.randrange(*nrange)

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#!/usr/bin/env python2
# coding: utf-8

def cover(words, separator=' '):
    return separator.join(['{:0>8}'.format(bin(ord(w))[2:]) for w in words])

def recover(words, separator=' '):
    return ''.join([chr(int(b,2)) for b in words.split(separator)])

if __name__ == '__main__':

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#!/usr/bin/env python
from datetime import datetime, timedelta

filename = 'input.vtt'
srt = []
delta = -10  # Subtitle timeline
count = 1
timeline = 0

def changetime(time, delta):

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package main

import "golang.org/x/tour/tree"
import "fmt"

// Walk 步进 tree t 将所有的值从 tree 发送到 channel ch。
func Walk(t *tree.Tree, ch chan int) {
	if t == nil {
		return
	}

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// 要在console中选择相应的页面
// iframe(play)
window.onfocus = function(){console.log('ononfocus')};
window.onblur = function(){console.log('onblur')};

// 去掉所有的定时器。
var biggestTimeoutId = window.setTimeout(function(){}, 1),i;
for(i = 1; i <= biggestTimeoutId; i++) {
    clearTimeout(i);
};console.log('biggestTimeoutId',biggestTimeoutId)

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// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/

// See page 165.

// Package intset provides a set of integers based on a bit vector.
package intset

import (
	"bytes"

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func noReturn() (result int) {
    defer func() {
        p := recover()
        result = p.(int)
    }()
    panic(42)
}