import win32api
import win32con
import random, datetime, time, calendar
import sys
import wx
import time
class CanvasPanel(wx.Panel):
    now_date = datetime.date.today()
    path = str(now_date) + '.txt'
    document = open(path,'w')
    """ create a panel with a canvas to draw on"""
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, -1)
        wx.EVT_SIZE(self, self.create_canvas)
        self.timer = wx.Timer(self)
        self.timer.Start(30)
        self.Bind(wx.EVT_TIMER, self.onTimer)
    def onTimer(self, event):
        self.canvas.Clear()
        for i in range(65,91):
            if win32api.GetAsyncKeyState(ord(unichr(i))):
                time.sleep(0.3)
                self.document.write('hello')
                print unichr(i),
    #здесь я хочу закрыть document с self.document.close() но она выдал такая ошибка
  '''
Traceback (most recent call last):
  File "C:\Users\MaxWell\Desktop\_\P - копия\duck\duck.py", line 23, in onTimer
    self.document.write('hello')
ValueError: I/O operation on closed file
'''
    def create_canvas(self, event=None):
        """create the paint canvas"""
        self.canvas = wx.ClientDC(self)
app = wx.App(0)
frame = wx.Frame(None, -1, "Title", size=(500, 400))
CanvasPanel(frame)
frame.Show(True)
app.MainLoop()

[code python][/code]