nice shell spinner

spinner

#!/usr/bin/env python
# coding: utf-8

import sys
import time

cursor = '\033[1D'
frames = ['⠋', '⠙', '⠹', '⠸', '⠼', '⠴', '⠦', '⠧', '⠇', '⠏']
amount = len(frames)
hide = '\033[?25l'
index = 0
show = '\033[?25h'

sys.stdout.write(hide)

while True:
  try:
    frame = frames[index % amount]
    index += 1

    sys.stdout.write('%s' % frame)
    sys.stdout.flush()

    time.sleep(0.1)

    sys.stdout.write('%s' % cursor)
  except KeyboardInterrupt:
    sys.stdout.write(show)
    sys.exit(0)
  except SystemExit:
    sys.stdout.write(show)
    raise