Python script to generates bash PS1 prompts using template blocks

prompt_maker [-h] "<string>"

Where <string> refers to any combination of the predefined [colors] and [special] blocks (enclosed in square brackets), along with any regular characters, including other special characters that bash recognises but aren't listed below.

colors:                 special:
[black]                 [username]
[red]                   [hostshort]
[green]                 [hostfull]
[yellow]                [dirshort]
[blue]                  [dirfull]
[purple]                [newline]
[cyan]                  [date]
[white]                 [time24]
[bblack]                [time12]
[bred]                  [tty]
[bgreen]                [jobs]
[byellow]               [rbracket]
[bblue]                 [lbracket]
[bpurple]               [dollar]
[bcyan]
[bwhite]
[nocolor]

[bcolors] are bold colors. [lbracket] and [rbracket] can be used to insert literal [ and ] respectively.

prompt_maker "[red][username]@[hostshort]:[bgreen][dirfull][nocolor][dollar]"

becomes

PS1='\[\e[0;31m\]\u@\h:\[\e[1;32m\]\w\[\e[m\]\$ \[\e[m\]'