BROWSERS 183 We scan the disk, finding all files with recognizable extensions and add the nodes to the tree: files = os.listdir(imgs) for file in files: r, ext = os.path.splitext(file) cont, icon = imageDir.get(ext, (None, None)) if cont: cont.addChild(self.browser, icon=icon, name=file, action=self.showMe) This code would probably be a little more complex in reality; I can see a couple of poten- tial problems as I’m writing this (I could write “I leave this as an exercise for you to identify problems with this code”). Once the tree has been built, we reset the inhibitDraw flag and display the tree: self.browser.inhibitDraw = 0 self.browser.display() That probably seems like a lot of code, but the resulting browser provides a highly- acceptable interface. In addition, users will understand the interface’s navigation and it is readily adaptable to a wide range of data models. Running Example_8_10.py (with a Python built with PIL) will display a screen similar to the one in figure 8.11. & * Figure 8.11 Image browse r . little more complex in reality; I can see a couple of poten- tial problems as I’m writing this (I could write “I leave this as an exercise for you to identify problems with this code”). Once. interface. In addition, users will understand the interface’s navigation and it is readily adaptable to a wide range of data models. Running Example_8_10.py (with a Python built with PIL) will. all files with recognizable extensions and add the nodes to the tree: files = os.listdir(imgs) for file in files: r, ext = os.path.splitext(file) cont, icon = imageDir.get(ext, (None, None))