Python控制台输出时刷新当前行内容而不是输出新行的实现

Downloading File FooFile.txt [47%]
Downloading File FooFile.txt [48%]
Downloading File FooFile.txt [49%]

import time
for i in range(10):
 time.sleep(0.2) 
 print ("\r Loading... ".format(i)+str(i), end="")

import sys
import time

for i in range(1000):
 percent = 1.0 * i / 1000 * 100
 sys.stdout.write("\r nihao: %d / %d" %(percent, 100))
 sys.stdout.flush()

 time.sleep(0.1)