Python

Threading

http://www.tutorialspoint.com/python/python_multithreading.htm

Note however that threading in python is limited due to the GIL. To achieve "true" threading, use the "multiprocess" library (which in fact spawns different processes and uses IPC mechanism for communication etc): https://www.quantstart.com/articles/Parallelising-Python-with-Threading-and-Multiprocessing

Tkinter and simple GUI programming

#!/usr/bin/env python

from Tkinter import *

def drawframe():
	c.delete("all")
	c.create_rectangle(0, 0, 150, 75 + c.steffe_i, fill="blue")
	c.steffe_i += 1
	root.after(10, drawframe)

def mouseclick(event):
	print "Mouse click at", event.x, event.y

def keyclick(event):
	print "Key click", event.keysym

root = Tk()
c = Canvas(root, width=640, height=480)
c.pack()

root.bind("<Key>", keyclick)
root.bind("<Button-1>", mouseclick)

c.config(borderwidth = 10)
c.config(background = "grey15")
c.steffe_i = 0

root.after(10, drawframe)
mainloop()

One function proper hexdump

The following function will convert a byte array to a format like this:

00000000  69 6d 70 6f 72 74 20 73  74 72 69 6e 67 0d 0a 0d  |import.string... |
00000010  0a 64 65 66 20 68 65 78  64 75 6d 70 28 63 76 65  |.def.hexdump(cve |
00000020  63 74 6f 72 2c 20 70 72  65 66 69 78 20 3d 20 22  |ctor,.prefix.=." |
00000030  22 29 3a 0d 0a 09 69 20  3d 20 30 0d 0a 09 73 20  |"):...i.=.0...s. |
00000040  3d 20 22 22 0d 0a 09 61  63 20 3d 20 5b 5d 0d 0a  |=.""...ac.=.[].. |
00000050  09 66 6f 72 20 63 20 69  6e 20 63 76 65 63 74 6f  |.for.c.in.cvecto |
00000060  72 3a 0d 0a 09 09 69 66  20 6e 6f 74 20 69 20 25  |r:....if.not.i.% |
00000070  20 31 36 3a 0d 0a 09 09  09 69 66 20 69 20 21 3d  |.16:.....if.i.!= |

The function is not designed to be memory efficient, fast or good looking, just simple to drop in and get some hex output.

import string

def hexdump(cvector, prefix = ""):
	i = 0
	s = ""
	ac = []
	for c in cvector:
		if not i % 16:
			if i != 0:
				s += " |"
				for cs in ac:
					css = chr(cs)
					s += css if css in string.printable and not css in string.whitespace else "."
				s += " |"
				ac = []
			s += "\n%s%s " % (prefix, "%08x " % i)
		elif not i % 8:
			s += " "
		s += "%02x " % c
		ac.append(c)
		i += 1
	if len(ac) > 0:
		left = 16 - len(ac)
		for k in range(left):
			s += "   "
		if left >= 8:
			s += " "
		s += " |"
		for cs in ac:
			css = chr(cs)
			s += css if css in string.printable and not css in string.whitespace else "."
		for k in range(left):
			s += " "
		s += " |"

		return s

with open("hexdump.py", "rb") as f:
	data = f.read()
	print(hexdump(data))