import sys
import time
class ProgressBar(object):
"""ProgressBar class holds the options of the progress bar.
The options are:
start State from which start the progress. For example, if start is
5 and the end is 10, the progress of this state is 50%
end State in which the progress has terminated.
width --
fill String to use for "filled" used to represent the progress
blank String to use for "filled" used to represent remaining space.
format Format
incremental
"""
def __init__(self, start=0, end=10, width=12, fill='=', blank='.', format='[%(fill)s>%(blank)s] %(progress)s%%', incremental=True):
super(ProgressBar, self).__init__()
self.start = start
self.end = end
self.width = width
self.fill = fill
self.blank = blank
self.format = format
self.incremental = incremental
self.step = 100 / float(width) #fix
self.reset()
def __add__(self, increment):
increment = self._get_progress(increment)
if 100 > self.progress + increment:
self.progress += increment
else:
self.progress = 100
return self
def __str__(self):
progressed = int(self.progress / self.step) #fix
fill = progressed * self.fill
blank = (self.width - progressed) * self.blank
return self.format % {'fill': fill, 'blank': blank, 'progress': int(self.progress)}
__repr__ = __str__
def _get_progress(self, increment):
return float(increment * 100) / self.end
def reset(self):
"""Resets the current progress to the start point"""
self.progress = self._get_progress(self.start)
return self
class AnimatedProgressBar(ProgressBar):
"""Extends ProgressBar to allow you to use it straighforward on a script.
Accepts an extra keyword argument named `stdout` (by default use sys.stdout)
and may be any file-object to which send the progress status.
"""
def __init__(self, *args, **kwargs):
super(AnimatedProgressBar, self).__init__(*args, **kwargs)
self.stdout = kwargs.get('stdout', sys.stdout)
def show_progress(self):
if hasattr(self.stdout, 'isatty') and self.stdout.isatty():
self.stdout.write('\r')
else:
self.stdout.write('\n')
self.stdout.write(str(self))
self.stdout.flush()
if __name__ == '__main__':
p = AnimatedProgressBar(end=100, width=80)
while True:
p + 5
p.show_progress()
time.sleep(0.1)
if p.progress == 100:
break
print #new line
