How do I write output in same place on the console?

Question

I am new to python and am writing some scripts to automate downloading files from FTP servers, etc. I want to show the progress of the download, but I want it to stay in the same position, such as:

output:

Downloading File FooFile.txt [47%]

I'm trying to avoid something like this:

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

How should I go about doing this?

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Duplicate: How can I print over the current line in a command line application?

Answer 1

You can also use the carriage return:

sys.stdout.write("Download progress: %d%%   \r" % (progress) )
sys.stdout.flush()

Answer 2

Use a terminal-handling library like the curses module:

The curses module provides an interface to the curses library, the de-facto standard for portable advanced terminal handling.

Answer 3

Python 2

I like the following:

print 'Downloading File FooFile.txt [%d%%]\r'%i,

Demo:

import time

for i in range(100):
    time.sleep(0.1)
    print 'Downloading File FooFile.txt [%d%%]\r'%i,

Python 3

print('Downloading File FooFile.txt [%d%%]\r'%i, end="")

Demo:

import time

for i in range(100):
    time.sleep(0.1)
    print('Downloading File FooFile.txt [%d%%]\r'%i, end="")

Answer 4

Print the backspace character \b several times, and then overwrite the old number with the new number.

Answer 5

#kinda like the one above but better :P

from __future__ import print_function
from time import sleep

for i in range(101):
  str1="Downloading File FooFile.txt [{}%]".format(i)
  back="\b"*len(str1)
  print(str1, end="")
  sleep(0.1)
  print(back, end="")

Answer 6

For Python 3xx:

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

Answer 7

A neat solution that has been working for me is:

from __future__ import print_function
import sys
for i in range(10**6):
    perc = float(i) / 10**6 * 100
    print(">>> Download is {}% complete      ".format(perc), end='\r')
    sys.stdout.flush()
print("")

The sys.stdout.flush is important otherwise it gets really clunky and the print("") on for loop exit is also important.

UPDATE: As mentioned in the comments, print also has a flush argument. So the following will also work:

from __future__ import print_function
for i in range(10**6):
    perc = float(i) / 10**6 * 100
    print(">>> Download is {}% complete      ".format(perc), end='\r', flush=True)
print("")

Answer 8

x="A Sting {}"
   for i in range(0,1000000):
y=list(x.format(i))
print(x.format(i),end="")

for j in range(0,len(y)):
    print("\b",end="")