20220329-day18:利用\r简答的实现下载进度100%
import time
for i in range(1,101):
print("\r正在下载，{}%".format(i),end="")
time.sleep(0.05)
print("\n下载完毕")
import time
for i in range(1,101):
print("\r正在下载，{}%".format(i),end="")
time.sleep(0.05)
print("\n下载完毕")