Question

I am writing a little application to download files over http (as, for example, described here).

I also want to include a little download progress indicator showing the percentage of the download progress.

Here is what I came up with:

     sys.stdout.write(rem_file + '...')         urllib.urlretrieve(rem_file, loc_file, reporthook=dlProgress)      def dlProgress(count, blockSize, totalSize):       percent = int(count*blockSize*100/totalSize)       sys.stdout.write('%2d%%' % percent)       sys.stdout.write('\b\b\b')       sys.stdout.flush() 

Output: MyFileName… 9%

Any other ideas or recommendations to do this?

One thing that’s somewhat annoying is the blinking cursor in the terminal on the first digit of the percentage. Is there a way to prevent this? Is there a way to hide the cursor?

EDIT:

Here a better alternative using a global variable for the filename in dlProgress and the ‘\r’ code:

     global rem_file # global variable to be used in dlProgress      urllib.urlretrieve(rem_file, loc_file, reporthook=dlProgress)      def dlProgress(count, blockSize, totalSize):       percent = int(count*blockSize*100/totalSize)       sys.stdout.write('\r' + rem_file + '...%d%%' % percent)       sys.stdout.flush() 

Output: MyFileName…9%

And the cursor shows up at the END of the line. Much better.

Answer 1

There’s a text progress bar library for python at http://pypi.python.org/pypi/progressbar/2.2 that you might find useful:

This library provides a text mode progressbar. This is tipically used to display the progress of a long running operation, providing a visual clue that processing is underway.

The ProgressBar class manages the progress, and the format of the line is given by a number of widgets. A widget is an object that may display diferently depending on the state of the progress. There are three types of widget: – a string, which always shows itself; – a ProgressBarWidget, which may return a diferent value every time it’s update method is called; and – a ProgressBarWidgetHFill, which is like ProgressBarWidget, except it expands to fill the remaining width of the line.

The progressbar module is very easy to use, yet very powerful. And automatically supports features like auto-resizing when available.