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rainbow

Python script to format and print text with fun colours

Description

Enter rainbow string to formant string and print the result to the console (standard output). Use rainbow --file file to format the contents of the text file file and print the results. By default, the text is split by character; specify -w to instead have the formatting applied on a word by word basis. For a detailed description of the available formatting, see rainbow --help.

Setup

  • Ensure rainbow.py and `usage' are in the same directory
  • Edit the SCRIPT_DIR variable at the top of the Rainbow() class in rainbow.py
  • Create an alias, for example in ~/.bashrc
alias rainbow="python full_path_to_rainbow.py"

(Otherwise python full_path_to_rainbow.py will be required to invoke the script). Here python should refer to your python3 executable (python3 on some systems).

Tip

Apply formatting to the standard output of bash commands using command substitution. For example,

rainbow "$(ls)" -bg
rainbow "$(cal)" -fg -b

(note that double quotes, not single quotes, must be used here).

Have some fun with the available formatting. A personal favourite is the simple combination -w -fg.

Future features

  • Hidden character formatting
  • 256 colour formatting
  • Finer control over formatting (e.g. every 1 in 3 characters blinking)

Bugs

  • If -dec is used in conjunction with -b, the frequency of occurrence of blinking characters or words is reduced.

Tested in the rxvt-unicode terminal emulator running bash.

Changelog

V1.0 (2018-06-24)

V1.1 (2018-07-01)

  • Added -a and -w options
  • Fixed handling of -nfw and -bf options when used in conjunction with each other and -fg, -bg
  • Fixed error when an empty string is passed as an arguement

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Python script to format and print text with fun colours

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