import time
scale = 50
start = time.perf_counter()
print("程序开始".center(int(scale/2),'-'))
for i in range(scale+1):
a = '*' * i
b = '.' * (scale - i)
c = i/scale*100
t =time.perf_counter() - start
time.sleep(0.05)
print("\r{0:^3.0f}%{1}->{2}{3:.2f}s".format(c,a,b,t),end="")
print('\n'+"程序结束".center(int(scale/2),'-'))
scale = 50
start = time.perf_counter()
print("程序开始".center(int(scale/2),'-'))
for i in range(scale+1):
a = '*' * i
b = '.' * (scale - i)
c = i/scale*100
t =time.perf_counter() - start
time.sleep(0.05)
print("\r{0:^3.0f}%{1}->{2}{3:.2f}s".format(c,a,b,t),end="")
print('\n'+"程序结束".center(int(scale/2),'-'))