python练习习题：文本进度条

文本进度条
代码如下：
#TextProBarV1.py
import time
scale = 10   #文本进度条的宽度
print("------执行开始------")
for i in range(scale+1):
    a = '*' * i
    b = '.' * (scale - i)
    c = (i/scale)*100
    print("{:^3.0f}%[{}->{}])".format(c,a,b))
    time.sleep(0.1)
print("------执行结束------")

文本进度条单行进度刷新

代码如下：

#文本进度条-单行动态刷新
import time
for i in range(101):
    print("\r{:3}%".format(i),end="")
    time.sleep(0.1)

文本进度条--完整展示

代码如下：

#文本进度条-完整展示
#TextProBarV3.py
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,'-'))