You can also use ctypes to tap into the windows API and avoid the massive pywin32 package. This is what I use, (excuse the poor style, but the idea is there.) 
import ctypes
#Get required functions, strcpy..
strcpy = ctypes.cdll.msvcrt.strcpy
ocb = ctypes.windll.user32.OpenClipboard    #Basic Clipboard functions
ecb = ctypes.windll.user32.EmptyClipboard
gcd = ctypes.windll.user32.GetClipboardData
scd = ctypes.windll.user32.SetClipboardData
ccb = ctypes.windll.user32.CloseClipboard
ga = ctypes.windll.kernel32.GlobalAlloc    # Global Memory allocation
gl = ctypes.windll.kernel32.GlobalLock     # Global Memory Locking
gul = ctypes.windll.kernel32.GlobalUnlock
GMEM_DDESHARE = 0x2000 
def Get( ):
  ocb(None) # Open Clip, Default task
  pcontents = gcd(1) # 1 means CF_TEXT.. too lazy to get the token thingy ... 
  data = ctypes.c_char_p(pcontents).value
  #gul(pcontents) ?
  ccb()
  return data
def Paste( data ):
  ocb(None) # Open Clip, Default task
  ecb()
  hCd = ga( GMEM_DDESHARE, len( bytes(data,"ascii") )+1 )
  pchData = gl(hCd)
  strcpy(ctypes.c_char_p(pchData),bytes(data,"ascii"))
  gul(hCd)
  scd(1,hCd)
  ccb()