fancybar 0.2.0

A highly customizable terminal progress bar library

fancybar is a highly customizable terminal progress bar library. Usage is very simple:

import fancybar
for i in fancybar.bar(range(100)):
   # Do something

You can also create a bar without an iterable:

import fancybar
bar = fancybar.ProgressBar(100)
   with bar:
       # Do something

Installation

Pip

python3 -m pip install fancybar

Git

git clone https://github.com/jenca-adam/fancybar
cd build
python3 setup.py install

Bar Types

Please note that not all bar types will work on all terminals! Bar type showcases can be seen in the gif file at the top of this page. You can select a bar type using the bartype argument of ProgressBar There are currently the following bar types:

• full

  

  This bar type uses character ‘ ‘ (U+0020 SPACE) and filler ‘ ‘ (U+0020 SPACE) with default character background color “white”. Your terminal must have the ability to output colored text for this bar type to properly render.

• plusMinus

  

  This bar type uses character ‘+’ (U+002B PLUS SIGN) and filler ‘-’ (U+002D HYPHEN-MINUS) with default character foreground color “green” and default filler foreground color “red”. Your terminal must have the ability to output colored text for this bar type to properly render.

• classic

  This bar type uses character ‘#’ (U+0023 NUMBER SIGN) and filler ‘ ‘ (U+0020 SPACE). This bar type should work on any terminal.

• triangles

  

  This bar type uses character ‘▶’ (U+25B6 BLACK RIGHT-POINTING TRIANGLE) and filler ‘▷’ (U+25B7 WHITE RIGHT-POINTING TRIANGLE). Your terminal must have the ability to display Unicode characters for this bar type to properly render.

• dots

  

  This bar type uses character ‘.’ (U+002E FULL STOP) and filler ‘ ‘ (U+0020 SPACE). This bar type should work on any terminal.

• gradient

  

  THIS BAR DOES NOT SHARE THE ARGUMENTS WITH THE OTHER BARS.

  This bar type uses character ‘▌’ (U+258C LEFT HALF BLOCK). The background and foreground colors are shifting in a gradient specified by the arguments start_color (default “red”) and end_color (default “green”) of ProgressBar . Your terminal must have the ability to display Truecolor 24-bit colors (e.g. xterm and its derivatives, KDE Konsole, KDE Yakuake) and to display Unicode characters for this bar type to properly render.

• minus

  

  This bar type uses character ‘-’ (U+002D HYPHEN-MINUS) and filler ‘ ‘ (U+0020 SPACE)

Arguments

General Arguments

All bar types (except gradient and including custom bar types ) can be customized using a set of keyword-only arguments given to ProgressBar. See Entry Points

These arguments are:

• char_bg_color Specifies the background color of the filled part of the progressbar. See Colors for more information about specifying colors.

• char_fg_color Specifies the color of the characters in the filled part of the progressbar. See Colors for more information about specifying colors.

• filler_bg_color Specifies the background color of the empty part of the progressbar. See Colors for more information about specifying colors.

• filler_fg_color Specifies the color of the characters in the empty part of the progressbar. See Colors for more information about specifying colors.

All of these arguments default to None.

Gradient type

Gradient bar type has different arguments:

• start_color Specifies the starting color of the bar’s gradient. Defaults to “red”

• end_color Specifies the ending color of the bar’s gradient. Defaults to “green”

These are set the same way as

Creating custom bar types

If the built-in bar types are not enough for your needs, you can easily create custom ones using create_bar_type() function. Its arguments are:

• char Character to be used in the filled part of the progressbar.(required)

• filler Character to be used in the empty part of the progressbar.(required)

• name __qualname__ of the returned class. (defaults to “?”)

• char_bg_color See Arguments (defaults to None)

• char_fg_color See Arguments (defaults to None)

• filler_bg_color See Arguments (defaults to None)

• filler_fg_color See Arguments (defaults to None)

Spinners

Credit for all spinners except “loading” goes to Sindre Sorhus

“loading” spinner is made by me.

All spinners are on the GIF above. The spinners not shown are not shown because of the asciinema charset limitations. To get a more acute representation of the spinners, clone the repository and run python3 spinner_test.py. The default spinner is . You can choose a spinner by setting the argument spinner of ProgressBar to its name. See Entry Points

Changing spinner speed

If you don’t like the animation speed on your spinner, you can change its speed using the argument spinner_speed of ProgressBar. spinner_speed is the speed of the spinner on the progress bar in revolutions per iteration. Default is 0.5.

Entry Points

ProgressBar

Main entry point of the fancybar library is the ProgressBar class. Its __init__ function has the following arguments:

• items (int): Required. The number of items the progress bar is running on.

• length (int): How much space will the progressbar take on screen. Defaults to 50

• item_name (str): What abbreviation to use for items in the items/second part of the progress bar. Defaults to “it”

• spinner (str): The name of the spinner. See Spinners. Default “line”

• spinner_speed (float or int): The spinner’s speed. See Spinners. Default 0.5.

• percentage_bg_color (str or tuple or None): What color is to be used for the background color of the percentage part of the progress bar. See Colors. Default None

• percentage_fg_color (str or tuple or None): What color is to be used for the foreground color of the percentage part of the progress bar. See Colors. Default None

• spinner_bg_color (str or tuple or None): What color is to be used for the background color of the spinner part of the progress bar. See Colors. Default None

• spinner_fg_color (str or tuple or None): What color is to be used for the foreground color of the spinner part of the progress bar. See Colors. Default None.

• bartype (str or type): Bar type for the progress bar. See Bar Types. Default “full”.

• hide_cursor (bool): Whether or not is the cursor to be hidden during the progress bar’s runtime. Default False

All arguments after items are not required and keyword-only

SequentialProgressBar

SequentialProgressBar is a subclass of ProgressBar that creates progress bars from an iterable sequence. len() must be callable upon those sequences. SequentialProgressbar replaces ProgressBar’s items argument by a seq argument – the sequence you want to create progress bars from. All other arguments are unchanged. bar is an alias for SequentialProgressBar, as it is more likely to be used than ProgressBar

Colors

Colors can be specified by either a color string or a RGB tuple. RGB tuples only work on Truecolor terminals.

Color Strings

All Terminals

These colors should work on all terminals that support colored output

256-color

These colors work on 256-color type terminals. The ones that are not in All terminals might display differently/incorrectly in other terminals.

RGB Tuples

RGB tuples must be in format 0-255 and must not contain alpha part. RGB tuples are only supported in Truecolor terminals. They might display differently/incorrectly in other terminals.

Runtime attributes

While your bar is running, you can easily access some of its attributes:

• ProgressBar.eta - current ETA in seconds

• ProgressBar.percentage - current percentage

• ProgressBar.items_done - number of items already done