模拟进度条

 1 #模拟进度条
 2 import time
 3 scale = 50
 4 t = time.perf_counter()
 5 print("执行开始".center(scale // 2, "-"))
 6 for i in range(1, scale + 1):
 7     a, b = "*" * i, " " * (scale - i)
 8     c = (i / scale) * 100
 9     t = time.perf_counter()
10     print("\r{:^6.2f}% [{}{}]耗时：{:3.2f}s".format(c, a, b, t), end='')
11     time.sleep(0.1)
12 print()
13 print("执行结束".center(scale // 2, "-"))