Basic Curses With Python Tutorial

It is important to understand Basic Curses with Python which is another important aspect of python programming. Learn more about it here.

Basic Curses with Python: The wrapper() helper function

While the basic invocation above is easy enough, the curses package provides the wrapper(func, …) helper function. The example below contains the equivalent of above:

main(scr, *args):
-- Perform an action with Screen -- scr.border(0)
scr.addstr(5, 5, 'Hello from Curses!', curses.A_BOLD) scr.addstr(6, 5, 'Press q to close this screen', curses.A_NORMAL)
while True:
stay in this loop till the user presses 'q' ch = scr.getch()
if ch == ord('q'):
curses.wrapper(main)

Here, wrapper will initialize curses, create stdscr, a WindowObject and pass both stdscr, and any further arguments to func. When func returns, wrapper will restore the terminal before the program exits.

Basic Invocation Example

import curses
import traceback
try:

— Initialize —

stdscr = curses.initscr() # initialize curses screen
curses.noecho() # turn off auto echoing of keypress on to screen
curses.cbreak() # enter break mode where pressing Enter key

after keystroke is not required for it to register

stdscr.keypad(1) # enable special Key values such as curses.KEY_LEFT etc
-- Perform an action with Screen -- stdscr.border(0)
stdscr.addstr(5, 5, 'Hello from Curses!', curses.A_BOLD) stdscr.addstr(6, 5, 'Press q to close this screen', curses.A_NORMAL)
while True:
stay in this loop till the user presses 'q' ch = stdscr.getch()
if ch == ord('q'): break
-- End of user code --
except:
traceback.print_exc() # print trace back log of the error
finally:
--- Cleanup on exit ---
stdscr.keypad(0) curses.echo() curses.nocbreak() curses.endwin()

Learn More

https://codingcompiler.com/py-test/
https://codingcompiler.com/profiling/
https://codingcompiler.com/performance-optimization/

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