Width of progressbar is wrong

[maxnoe]

 10% (1 of 10) |##                          | Elapsed Time: 0:00:00 ETA: 0:00:0
 20% (2 of 10) |#####                       | Elapsed Time: 0:00:00 ETA: 0:00:0
 30% (3 of 10) |########                    | Elapsed Time: 0:00:00 ETA: 0:00:0
 40% (4 of 10) |###########                 | Elapsed Time: 0:00:00 ETA: 0:00:0
 50% (5 of 10) |##############              | Elapsed Time: 0:00:00 ETA: 0:00:0  
 60% (6 of 10) |################            | Elapsed Time: 0:00:00 ETA: 0:00:0 
 70% (7 of 10) |###################         | Elapsed Time: 0:00:00 ETA: 0:00:0
 80% (8 of 10) |######################      | Elapsed Time: 0:00:00 ETA: 0:00:0
 90% (9 of 10) |#########################   | Elapsed Time: 0:00:00 ETA: 0:00:0
100% (10 of 10) |#############################| Elapsed Time: 0:00:01 Time: 1.00

arch linux, i3wm, rxvt-unicode-256 color
Also on windows in mysy2

[wolph]

It could be due to an old version but there's not really a mistake (in my case at least).

 10% (1 of 10) |##                          | Elapsed Time: 0:00:00 ETA: 0:00:00
 20% (2 of 10) |#####                       | Elapsed Time: 0:00:00 ETA: 0:00:00
 30% (3 of 10) |########                    | Elapsed Time: 0:00:00 ETA: 0:00:00
 40% (4 of 10) |###########                 | Elapsed Time: 0:00:00 ETA: 0:00:00
 50% (5 of 10) |##############              | Elapsed Time: 0:00:00 ETA: 0:00:00
 60% (6 of 10) |################            | Elapsed Time: 0:00:00 ETA: 0:00:00
 70% (7 of 10) |###################         | Elapsed Time: 0:00:00 ETA: 0:00:00
 80% (8 of 10) |######################      | Elapsed Time: 0:00:00 ETA: 0:00:00
 90% (9 of 10) |#########################   | Elapsed Time: 0:00:00 ETA: 0:00:00
100% (10 of 10) |#############################| Elapsed Time: 0:00:00 Time: 0.12

While it looks weird, it's just adjusting to the width of the terminal (80 characters) and at the last line the Time: 1.00 is less wide than the ETA: 0:00:0 which causes it to be wider. Also, the 10 of 10 is wider than 9 of 10 which causes it to move.

I'll see if I can make those (mostly) fixed size to make it cleaner.

[wolph]

Release 3.4.0 tries to make sure that the widgets always keep the same size. It won't work in all cases but many cases should be handled now.

[maxnoe]

Now i do not get any progressbar at all.
100% (100 of 100) || Elapsed Time: 0:00:10 Time: 0:00:10-

[wolph]

That means something is wrong with the width detection... I tested it in several environments and it appeared to work but apparently it's still broken :(

Sorry about that, I'll have a look at it.

[maxnoe]

And on windows I get:
AttributeError: module 'signal' has no attribute 'SIGWINCH'

for

from progressbar import ProgressBar

progress = ProgressBar()

[maxnoe]

Oh, and I think you misunderstood: This is the exact output I posted.
Every time the progressbar was updated a new line was started, because it was slidly wider (1 or a feq charakters) than the line width.

I did not mean, that the last progressbar is wider than the others.

[wolph]

That would actually be the effect if the width can't be detected. The bar should automatically resize to the size of your screen. But if your screen is somehow 0 (broken detection code), it makes the bar as small as possible. Regardless, it's significantly broken unfortunately :(

I've removed the release from pypi for the time being and I'll try to update the package soon.

[maxnoe]

Using blessings.Terminal gives me the correct results.

[maxnoe]

Just playing around a bit:

from blessings import Terminal
from time import sleep

t = Terminal()
with t.hidden_cursor():
    for i in range(101):
        percentage = '{:>3d} %'.format(i)
        start = '|'
        end = '|'

        barlength = t.width - (len(percentage) + len(start) + len(end))

        len_progress = max(int(round(barlength * (i/100), 0)) - 1, 0)
        bar = '=' * len_progress
        arrow = '>' if i < 100 else '='
        empty = ' ' * (barlength - len_progress - 1)

        full = percentage + start + bar + arrow + empty + end
        print('\r' + full, end='')
        print(t.move_right(1) + t.clear_eos, end='', flush=True)
        sleep(0.1)

[wolph]

Blessings is a very nice module as well, I've added the module as a width detection option for people that have it installed but it still has some detection if it's not available

[wolph]

Sorry for the trouble Max, I believe the current release should fix everything.

[maxnoe]

Ah yes. I think you forgot a debug output:

shutil 48 111

An idea: Elapsed Time: ... takes very much space. Could you maybe reduce the number of widgets automatically if the term width is so small, that no progressbar fits any more? First dropping Elapsed Time, than the ETA?

[wolph]

Oops... indeed, it's gone now :)

As for collapsing widgets, not impossible to achieve but I'm not sure how to implement that cleanly in the base code. Generally screens are fairly large these days but it's a bit of a waste of screenspace indeed.

I've just pushed out a new release that has support for something along those lines. Give this code a try:

import time
import progressbar

bar = progressbar.ProgressBar(widgets=[
    progressbar.Timer(min_width=200),
    progressbar.Bar(),
])
for i in bar(range(200)):
    time.sleep(0.1)

[wolph]

Note that the min_width and max_width settings indicate the width in characters, not pixels. So if the screen is at least 200 characters wide, the Timer will show.