在Unix上使用os.system命令的Python Counter Loop

Question

我有一个简单的计数器循环，在使用'print'

时工作正常

import time

def screenshot(get_name):
    print('Screenshoting {0}').format(get_name)
    time.sleep(1)
counter = 0
while True:
    screenshot(counter)
    counter = counter + 1

但是当我尝试将它应用到os.system（“Command”）时它不起作用？

import time

def screenshot(get_name):
    os.system("screencapture ~/Desktop/test/screenshot{0}.jpg").format(get_name)
    time.sleep(1)
counter = 0
while True:
    screenshot(counter)
    counter = counter + 1