#!/usr/bin/env python3 import sys import time class ProgressBar(object): """A simple progress bar with a percent completed value.""" def __init__(self, initial_value=0, max_value=100, print_width=50, newline="\r", quiet=False): self.value = self.initial_value = initial_value self.max_value = max_value self.print_width = print_width self.newline = newline self.quiet = quiet def set(self, value=0): """Set the current value of the progress bar.""" self.value = value def reset(self): """Reset the progress bar to its initial value.""" self.set(value=self.initial_value) def finish(self): """Complete the progress bar by setting it to its maximum value.""" self.update(value=self.max_value) if not self.quiet: print() def update(self, value=0): """Set the current value of the progress bar and redraw it.""" self.set(value) self.draw() def draw(self): """Draw the current state of the progress bar.""" if not self.quiet: percent = int(self.value * 100 / self.max_value) dots = int(self.value * self.print_width / self.max_value) bar = "{nl}[{c}{nc}] {p}% ".format( c="+" * dots, nc="." * (self.print_width - dots), p=percent, nl=self.newline) sys.stdout.write(bar) sys.stdout.flush() if __name__ == "__main__": p = ProgressBar() for i in range(0, 100): p.update(value=i) time.sleep(0.05) p.finish()