man that looks totally pythonic. On 7/19/07, Ian Witham <[EMAIL PROTECTED]> wrote:
try this: for a in range(10): r, g, b = pixel[1030*(y-a) + x] if g > r and g > b: box += 1 This is an example of "unpacking" a tuple into separate variables, r, g and b. On 7/19/07, elis aeris <[EMAIL PROTECTED]> wrote: > > # pixel[] is a list of tuples: (r,g,b) > # pixel[1030*(y-a) + x][0] = r > # pixel[1030*(y-a) + x][1] = g > # pixel[1030*(y-a) + x][2] = b > > for a in range(0, 10): > if pixel[1030*(y-a) + x][1] > pixel[1030*(y-a) + x][0] and > pixel[1030*(y-a) + x][1] > pixel[1030*(y-a) + x][2]: > box = box + 1 > > print box > > > i have never used double conditions before, is this correct? > > I want box++ when the g is both bigger than r and b. > > > > > > > > > > > > > > > > > > import time > > import ImageGrab # Part of PIL > from ctypes import * > > # Load up the Win32 APIs we need to use. > class RECT(Structure): > _fields_ = [ > ('left', c_ulong), > ('top', c_ulong), > ('right', c_ulong), > ('bottom', c_ulong) > ] > > # time.sleep(2) > > GetForegroundWindow = windll.user32.GetForegroundWindow > GetWindowRect = windll.user32.GetWindowRect > > # Sleep for 2 seconds - click the window you want to grab. > #time.sleep(2) > > > > # Grab the foreground window's screen rectangle. > rect = RECT() > foreground_window = GetForegroundWindow() > GetWindowRect(foreground_window, byref(rect)) > image = ImageGrab.grab((rect.left, rect.top, rect.right, rect.bottom)) > > # Save the screenshot as a BMP. > time.sleep(2) > > > image.save("c:\python_codes\screenshot.bmp") > > # Get the pixel 10 pixels along the top of the foreground window - this > # will be a piece of the window border. > > # print time.time() > > start = time.time() > > pixels = image.getdata() > for x in xrange(0, 500): > for y in xrange(0, 500): > rgb = pixels[500 * x + y] > > print pixels[1][0] > > print ( time.time() - start ) > > # PIL returns colours as RGB values packed into a triple: > #print "RGB(%d, %d, %d)" % (rgb[0], rgb[1], rgb[2]) # This prints > RGB(0, 74, 216) on my XP machine > >
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