class FileCacher: "Cache the stdout text so we can analyze it before returning it" def __init__(self): self.reset() def reset(self): self.out = [] def write(self,line): self.out.append(line) def flush(self): output = '\n'.join(self.out) self.reset() return output class Shell(InteractiveConsole): "Wrapper around Python that can filter input/output to the shell" def __init__(self): self.stdout = sys.stdout self.cache = FileCacher() InteractiveConsole.__init__(self) return def get_output(self): sys.stdout = self.cache def return_output(self): sys.stdout = self.stdout def push(self,line): self.get_output() # you can filter input here by doing something like # line = filter(line) InteractiveConsole.push(self,line) self.return_output() output = self.cache.flush() # you can filter the output here by doing something like # output = filter(output) print output # or do something else with it return if __name__ == '__main__': sh = Shell() sh.interact()