Hi, After i posted a version of this question on the matplotlib-users list i decided it would probably be better to post it on the devel list. Here is the problem, if i include any one of the following three lines: from matplotlib.backends.backend_wx import FigureCanvasWx #from matplotlib.backends.backend_wx import Toolbar #from matplotlib.backends.backend_wx import FigureManager (here only the first one is uncommented...same result if i use either of the other two) in a file (test.py) and then type: python test.py i get: floyd:/home/jbenson/python>python test.py [Debug] 15:17:10: Adding duplicate image handler for 'PNG file' [Debug] 15:17:10: Adding duplicate image handler for 'JPEG file' [Debug] 15:17:10: Adding duplicate image handler for 'TIFF file' [Debug] 15:17:10: Adding duplicate image handler for 'GIF file' [Debug] 15:17:10: Adding duplicate image handler for 'PNM file' [Debug] 15:17:10: Adding duplicate image handler for 'PCX file' [Debug] 15:17:10: Adding duplicate image handler for 'XPM file' [Debug] 15:17:10: Adding duplicate image handler for 'Windows icon file' [Debug] 15:17:10: Adding duplicate image handler for 'Windows cursor file' [Debug] 15:17:10: Adding duplicate image handler for 'Windows animated cursor file' floyd:/home/jbenson/python> If i try the same line from a python prompt line: floyd:/home/jbenson>python Python 2.3.3 (#1, Dec 21 2003, 15:13:18) [GCC 3.3.1] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> from matplotlib.backends.backend_wx import FigureCanvasWx >>> ...no extra debug lines. I'm using matplotlib-0.52. Does anyone recognize where those [Debug] statements are coming from, and how i could get them to not show up? Thanks, Jim