progress.py

#!/usr/bin/env python

import sys
import time

current = int(sys.argv[1])
total = int(sys.argv[2])
width = int(sys.argv[3])

# -----------------------------------------------------------------------------
# Copyright (c) 2016, Nicolas P. Rougier
# Distributed under the (new) BSD License.
# -----------------------------------------------------------------------------
import sys, math

def progress(value,  length=40, title = " ", vmin=0.0, vmax=100.0):
    """
    Text progress bar

    Parameters
    ----------
    value : float
        Current value to be displayed as progress

    vmin : float
        Minimum value

    vmax : float
        Maximum value

    length: int
        Bar length (in character)

    title: string
        Text to be prepend to the bar
    """
    # Block progression is 1/8
    blocks = ["", "▏","▎","▍","▌","▋","▊","▉","█"]
    vmin = vmin or 0.0
    vmax = vmax or 100.0
    lsep, rsep = "", "▏"

    # Normalize value
    value = min(max(value, vmin), vmax)
    value = (value-vmin)/float(vmax-vmin)
    
    v = value*length
    x = math.floor(v) # integer part
    y = v - x         # fractional part
    base = 0.125      # 0.125 = 1/8
    prec = 3
    i = int(round(y*8))
    bar = "█"*x + blocks[i]
    n = length-len(bar)
    bar = lsep + bar + " "*n + rsep

    sys.stdout.write("\r" + title + bar + "%.1f%%" % (value*100))
    sys.stdout.flush()


progress(current, width, "", 0, total)