Printing to the same console line but dynamically

Question

As part of my script I am printing to the console. I'd really like to print onto the same line but dynamically. e.g.

Something like

1, 2,

1, 2, 3,

1, 2, 3, 4

I have tried:

logging.info("Deleting rows...");
for i in range(0, sizeOfFeed):
    logging.info("\%d"  % i);

Put this just does

\0
\1
\2

It's dynamic but on different lines.

Any tips

I don't understand the question. What printable stuff do you have and what is the function that governs the dynamicity of the printing out? — inspectorG4dget, Feb 10 '12 at 16:23

score 4 · Answer 1 · answered Feb 10 '12 at 16:24

4

Store the line to be printed. Print a \r then the line, then flush. Change the line, then repeat.

answered Feb 10 '12 at 16:24

Ignacio Vazquez-Abrams

776,304
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1,341
1,358

Works for me (although the OP will have to take care not to print a trailing newline). – DSM Feb 10 '12 at 16:27

score 3 · Accepted Answer · answered Feb 10 '12 at 16:33

3

from sys import stdout
from time import sleep
for i in range(1,20):
    stdout.write("\r%d" % i)
    stdout.flush()
    sleep(1)
stdout.write("\r  \r\n") # clean up

\r is a special char: carriage return, in old typing machine it locate the cursor at the begin of line

answered Feb 10 '12 at 16:33

Alberto

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Thanks. I note stdout must be used and print, logging go to the next line. Is there anyway to get this working with the logging module? – dublintech Feb 10 '12 at 16:56
1

I think you can't, but you can use the stderr for logging – Alberto Feb 10 '12 at 17:20
1

logging can print to stdout, stderr, files... even all at the same time - you just need to add the proper handlers – Wayne Werner Jul 29 '16 at 20:34

Printing to the same console line but dynamically

2 Answers2