Progress Bar. Print a simple progress bar in Terminal. The bar length is dynamically resized if the terminal window size is changed. Includes a simple example in main() function.

progressbar.py

def progressbar(advance, total, mark='=', bar_length=None):
    """
    Print Progress Bar in terminal:

    ARGS:
        advance (int): Typically is a ``loop for index``.
        total (int):   The total number of steps in the ``loop for``
        mark (str):    Is the mark used inside the progress bar.
                       Default is '='
        bar_lenght (float): Is the window-ratio to be filled by the
                            progress bar.
                            0 < bar_length < 1
                            Default is 2/3

    RETURN:
        Progress bar printed in terminal.
        
        [=         ] 10%

        [===       ] 30%
        
        
        [==========] 100% DONE!

    """
    import sys

    terminal_width = _get_terminal_width()

    if bar_length is None:
        bar_width = int((2/3)*terminal_width)
    else:
        bar_width = int(bar_length*terminal_width)

    sys.stdout.write('\r')
    sys.stdout.write("[{mark:{fill}{width}}] {adv}%".format(mark=mark*int(bar_width*(advance)/total),
                                                            fill='', width=bar_width, adv=int(100*advance/total)))
    sys.stdout.flush()
    if advance == total:
        print ' DONE!\n'



def _get_terminal_width():
    """
    Get the terminal width dinamically.

    ARGS: None

    RETURN:
        width (int): Returns the result ``tput cold``

    """
    import subprocess

    command = ['tput', 'cols']

    try:
        width = int(subprocess.check_output(command))
    except OSError as e:
        print("Invalid Command '{0}': exit status ({1})".format(
              command[0], e.errno))
    except subprocess.CalledProcessError as e:
        print("Command '{0}' returned non-zero exit status: ({1})".format(
              command, e.returncode))
    else:
        return width


def main():
    import time
    for i in xrange(10):
        time.sleep(1)
        progressbar(advance=i+1, total=10, mark="*")



if __name__ == "__main__":
    main()