# Tk_sizable_screengrab.py

# Tk_sizable_screengrab.py

import os, datetime

def take_screenshot(x=0, y=0, width=None, height=None):
    try:
        import wx
    except ImportError as e:
        return 'Screenshot could not be taken - wx could not be imported: %s' %(e)
    folder_name = datetime.date.today().strftime('%Y-%m-%d')
    file_name = datetime.datetime.now().strftime('%H-%M-%S') + '.jpg'
    directory = 'C:\\Users\\test\\' + folder_name
    try:
        os.mkdir(directory)
    except: pass
    filename = os.path.join(directory, file_name)
    global filename

    app = wx.App()
    screen = wx.ScreenDC()

    size = screen.GetSize()
    if width == None:
        width = size[0]
    if height == None:
        height = size[1]

    bmp = wx.EmptyBitmap(width, height)
    mem = wx.MemoryDC(bmp)
    mem.Blit(0, 0, width, height, screen, x, y)

    del mem
    bmp.SaveFile(filename, wx.BITMAP_TYPE_PNG)

take_screenshot(0,0,800,600)
print 'Screenshot saved to file: %s' %(filename)