Python Progress Bar

Question

How do I use a progress bar when my script is doing some task that is likely to take time?

For example, a function which takes some time to complete and returns

Answer 1

You should link the progress bar to the task at hand (so that it measures the progress :D). For example, if you are FTPing a file, you can tell ftplib to grab a certain size buffer, let's say 128K, and then you add to your progress bar whatever percentage of the filesize 128k represents. If you are using the CLI, and your progress meter is 20 characters long, you would add one character when 1/20th of the file had transferred.