Python has a curses
module. Is there a simple way to use this module to display inverse video text? I don't want to do the full-blown curses application, just want the text to bring inverse (or in color).
If you use the filter
function (before initscr
), the curses application will only update the current line of the screen (and will not clear the whole screen). That would be a minimal use of the curses library.
If you want a lower-level (no optimization, do it yourself), you would have to use the terminfo level of the library, i.e., these functions:
initscr
with filter
(since Python curses apparently has no interface to newterm)tigetstr
to read the capabilities for sgr
, sgr0
, smso
, rmso
, rev
tparm
to format parameters for sgr
if you use thatputp
to write the strings read/formatted via tigetstr
and tparm
The page Python curses.tigetstr Examples has some (mostly incomplete) examples using tigetstr
, and reminds me that you could use setupterm
as an alternative to newterm
. If you visit that page searching for "curses.filter", it asserts there are examples of its use, but reading, I found nothing to report.
Further reading:
filter
in use)A demo with reverse-video:
import curses
curses.filter()
stdscr = curses.initscr()
stdscr.addstr("normal-")
stdscr.addstr("Hello world!", curses.A_REVERSE)
stdscr.addstr("-normal")
stdscr.refresh()
curses.endwin()
print
or
import curses
curses.setupterm()
curses.putp("normal-")
curses.putp(curses.tigetstr("rev"))
curses.putp("Hello world!")
curses.putp(curses.tigetstr("sgr0"))
curses.putp("-normal")
illustrates a point: text written with curses.putp
bypasses the curses library optimization. You would use initscr
or newterm
to use the curses screen-optimization, but setupterm
to not use it, just using the low-level capability- and output-functions.