4grab/progressbar.py

import sys
import time

class Progress():
    def __init__(self, maxvalue, maxwidth=79, fd=sys.stdout):
        self.maxwidth = maxwidth
        self.maxvalue = maxvalue
        self.fd = fd
        self.prog_char = '#'
        self.fill_char = ' '

        self.show_progress(0)

    def show_progress(self, value):
        str_value = str(value)
        str_maxvalue = str(self.maxvalue)
        true_maxwidth = self.maxwidth - 4 - len(str_value) - len(str_maxvalue)
        progress = int(round((true_maxwidth/float(self.maxvalue))*value))
        self.fd.write("\r%s/%s [%s%s]" % (str_value, str_maxvalue, self.prog_char * progress, self.fill_char * (true_maxwidth - progress)))
        self.fd.flush()
        if value == self.maxvalue:
            self.fd.write("\n")

if __name__ == "__main__":
    prog = Progress(200)
    for i in range(1, 201):
        prog.show_progress(i)
        time.sleep(0.1)