percentage progress bar

progress.py

class CProgress:
    """Uses the Bresenham algorithm for line segments in the first octant."""
    def __init__(self,title='', mx=100):
        self.deltax = mx
        self.deltay = 40
        self.error, self.progress_y = 0, 0
        sys.stdout.write(title + ": [" + "-"*40 + "]" + chr(8)*41)
        sys.stdout.flush()

    def progress(self):
        if 2 * (self.error + self.deltay) < self.deltax:
            self.error += self.deltay
        else:
            self.progress_y += 1
            self.error += self.deltay - self.deltax
            sys.stdout.write("#")
            sys.stdout.flush()


    def endProgress(self):
        sys.stdout.write("#" * (self.deltay - self.progress_y)+ "]\n")
        sys.stdout.flush()

Uses a Bresenham algorithm for line segments in the first octant.