Progress bar into the terminal in python3

py_progress_bar.py

def progress_bar(current, total, bar_length=50):
    percent = int(round((current / total) * 100))
    nb_bar_fill = int(round((bar_length * percent) / 100))
    bar_fill = '#' * nb_bar_fill
    bar_empty = ' ' * (bar_length - nb_bar_fill)
    sys.stdout.write(f"\r  [{str(bar_fill + bar_empty)}] {percent}% ({current}/{total})  ")
    sys.stdout.flush()
    
def bar_example():
    for i in range(20):
        time.sleep(0.5)
        progress_bar(i, 99, 200)
        
if __name__ == '__main__':
    bar_example()