Python 文本进度条

1.0

import time
scale = 10
print("------执行开始------")
for i in range(scale + 1):
    a = '*' * i
    b = '.' * (scale - i)
    c = i*10
    print("{:^3.0f}%[{}->{}]".format(c, a, b))
    time.sleep(0.1)
print("------执行结束------")

输出：

------执行开始------
 0 %[->..........]
10 %[*->.........]
20 %[**->........]
30 %[***->.......]
40 %[****->......]
50 %[*****->.....]
60 %[******->....]
70 %[*******->...]
80 %[********->..]
90 %[*********->.]
100%[**********->]
------执行结束------

2.0

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("执行结束".center(scale//2, "-"))

输出：

-----------执行开始----------
100%[**************************************************->]5.02s
-----------执行结束----------