下载进度条实现

import time

for i in range(0,101,2):
    time.sleep(0.1)
    char_num = i // 2    #打印多少个'*'
    per_str = '\r%s%% : %s\n' % (i,'|' * char_num) if i == 100 else '\r%s%% : %s' % (i,'|' * char_num)
    print(per_str,end='',flush=True)