Python Overwrite Last Line Without Appending

Question

Similar questions have been answered for example here or here.

Building upon the answers provided I am trying to overwrite the last output line in a Spyder console using

interval = 1
for i in range(0,10):
    print(i, end = "\r")
    time.sleep(interval)

which gives me the following, unexpected output:

0123456789

If i reduce the sleep interval to something short interval = 0.01, then I get the output I would expect

How can the timing of these consecutive print statements influence what is being printed? And more importantly how do I get my pretty output? This happens only when I use Spyder (3.2.6) and does not occur in a regular Python console.

It could just be the terminal implementation of Spyder. Where they haven't properly implemented the \r character. You say it does not happen in a regular terminal/console? — Wouter Coebergh, Jun 28 '18 at 09:28

score 2 · Accepted Answer · answered Jun 28 '18 at 09:31

2

As far as I know spyderimplements an IPython console, which might behave diferently. Maybe check out this post.

answered Jun 28 '18 at 09:31

Diana

377
2
8

Thank you, in particular this line worked for me: `print('\r', 'Iteration', i, 'Score:', uniform(0, 1), end='')`. – Herr von Wurst Jun 28 '18 at 10:22

Python Overwrite Last Line Without Appending

1 Answers1