用python实现单行动态刷新文本进度条

转自用python实现单行动态刷新文本进度条https://blog.youkuaiyun.com/JessiFan/article/details/82316256

import time 
scale = 50 
print("执行开始".center(scale // 2,"-")) 
start = time.perf_counter() 
for i in range(scale + 1): 
    a = "*" * i 
    b = "." * (scale - i) 
    c = (i / scale) * 100 
    dur = time.perf_counter() - start 
    print("\r{:^3.0f}%[{}->{}]{:.2f}s".format(c,a,b,dur),end = "") 
    time.sleep(0.1) 
print("\n"+"执行结束".center(scale // 2,"-"))