引入
import time
主要是为了使程序暂停一会,以便人眼便于观察
import time
for i in range(50):
print("\r{:3.0f}%".format(i),end="") //\r将光标的位置回退到本行的开头位置
time.sleep(0.1)
进一步可以实现一个文本进度条式的显示
import time
scale = 100
print("执行开始".center(scale+10,"-"))
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+10,"-"))