CODEWITHSUNDEEP
pythonbashconsole
kilojoules
kilojoules

Reputation: 10083

display "updating text" on console

Is there a way to create things like progress bars or updating percentages to the command line in python? It would be much preferred to a new line for every update.

something that looks like this enter image description here

for n in range(10):
    print n*10,'%'

Upvotes: 2

Views: 6167

Answers (1)

Paulo Amaral
Paulo Amaral

Reputation: 863

Printing the \r character (carriage return) will move the cursor to the beginning of the line then you can re-write it from there. You will also need to keep the print function from adding a line break by providing end='' as a parameter.

To clarify how to use it, the example below increments a progress counter every second, re-writing the line every second:

import time

a = 0
while 1:
  text = "progress: " + str(a) + "%"
  print ("\r" + text + "        ", end='')
  time.sleep (1)
  a = a + 1

You will need this little amount of empty spaces at the end of the string (after text in the example). When you print variable-length text (like filenames or paths) you may have a situation where the next line update will be shorter than the previous, and you will need to clean up the excess characters from the previous iteration.

Upvotes: 1

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