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POSimple indeterminate progress bar in Python
 

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  1. POSimple indeterminate progress bar in Python
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    <p>Even when I am afraid to be a bit off-topic, but I am not sure where else to ask this, sorry!</p> <p>I wish to build a <code>**simple** indeterminate progress bar</code> in Python</p> <p>there is a really valid p<a href="https://code.google.com/p/python-progressbar/" rel="nofollow noreferrer">rogression bar module</a> in Python, but my target is build a simple personal progress bar to add every time to my code</p> <p>the following my code it's a simple progress bar when you know the <code>maxvalue</code> of your data</p> <pre><code>from __future__ import division import sys class Progress(object): def __init__(self, maxval): self._pct = 0 self.maxval = maxval def update(self, value): pct = int((value / self.maxval) * 100.0) if self._pct != pct: self._pct = pct self.display() def start(self): self.update(0) def finish(self): self.update(self.maxval) def display(self): sys.stdout.write("\r|%-73s| %d%%" % ('#' * int(self._pct*.73), self._pct)) sys.stdout.flush() import time toolbar_width = 300 pbar = Progress(toolbar_width) pbar.start() for i in xrange(toolbar_width): time.sleep(0.1) # do real work here pbar.update(i) pbar.finish() </code></pre> <p>now i wish to create a new class IndeterminateProgress(object) in order to create a simple indeterminate progress bar when the maxvalue of your data is unknown.</p> <p>the basic idea is print from 0 to 100 and back from 100 to 0 and again until all data are all read or all processed (code update with the help of Ethan Coon, see below)</p> <pre><code> class IndeterminateProgress(object): def __init__(self): self._pct = 0 self.maxval = 100 def update(self,value): abs_pct = value % self.maxval # this gives the percentage change from maxval phase = int(value / self.maxval) % 2 # this gives whether the bar is increasing or decreasing in size if phase == 0: rel_pct = abs_pct / self.maxval * 100 else: rel_pct = (self.maxval - abs_pct) / self.maxval * 100 if (rel_pct != self._pct): self._pct = rel_pct self.display() def start(self): self.update(0) def display(self): sys.stdout.write("\r|%-73s| %d%%" % ('#' * int(self._pct*.73), self._pct)) sys.stdout.flush() data_flush = 30000000 pbar = IndeterminateProgress() for i in xrange(data_flush): time.sleep(0.1) # do real work here pbar.update(i) </code></pre> <p>Testing with the Command Prompt of windows, the progress bar after 100% back to 0%, go to 100% but after this a new under progress bar is created.</p> <p><img src="https://i.stack.imgur.com/AH4lF.jpg" alt="enter image description here"></p> <p>The idea is print only one line of indeterminate progress bar</p>
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    1. USGianni Spear
    1. USGianni Spear
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    1. COWhat is the point of printing the numbers if the progress is indeterminate? How about showing some interesting animated ASCII art instead? :)
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      1. POSimple indeterminate progress bar in Python
      1. USWarren Weckesser
    2. COThe original idea was an indeterminate progress bar, but i am an open guy =D!
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      1. POSimple indeterminate progress bar in Python
      1. USGianni Spear
    3. COHmm, this doesn't happen to me on a linux machine... the bar goes right, left, right, left as expected forever with only one line. The number is 47% for me as well, where as it maybe should read 247%, which wouldn't be hard to fix, but I'm not sure why you're getting a 2nd line.
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      1. POSimple indeterminate progress bar in Python
      1. USEthan Coon
 

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