A new line gets printed instead of updating the current line / Weird characters get printed

Hi, Great library you’ve got. I started using it because I love the cool features

I just started working with alive-progress and tested it using the following script:

import time
items = range(10)                  # retrieve your set of items
with alive_bar(len(items)) as bar:   # declare your expected total
    for item in items:               # iterate as usual
        # process each item
        bar()                        # call after consuming one item
        time.sleep(1)

The output I get is :

python prints the progress bar to a new line instead of updating the current line Also notice how some characters are like ? (question marks) inside boxes (I’m guessing something wrong with character encoding ??)

I’m using Python 3.8.3 on Windows 10 build 19041.630 The console I’m using is the windows command prompt The font used in the console is Consolas If you want more info, I’m willing to provide. Thank You !!

[rsalmei]

Yeah, it may be a limitation of the terminal itself. Please try on the new windows terminal: https://www.howtogeek.com/673729/heres-why-the-new-windows-10-terminal-is-amazing/

[rsalmei]

Hey man, thank you! I wish you like it even more after it start working right for you!

Well, it seems there’s two problems in there. The new line I’ve found recently it does occur on Windows, only inside the basic python interpreter. Unfortunately, all function calls inside python on Windows prints its result on screen!! Argh 😞 That’s why the lines all start with “on N: N”, it’s the current line that python interpreter arbitrarily prints…

So please try it inside ipython, it’s a way better environment anyway (I use it 100% of the time):

pip install ipython
ipython

The new version in the works (#51) will not return the current line, so it should fix that.

The other problem is the weird characters. Unfortunately I think the basic command prompt on Windows really does not support them. They are control chars that I use to improve presentation like clearing the line, hiding the cursor, etc. For this I recommend installing the new WSL - Windows Subsystem for Linux. I’ve installed it on my gaming machine with Windows 10 Home Edition, and it’s awesome! With it you get to use a very improved terminal app, with a much better shell like ZSH.