Python interactive console using curses lib getstr() function dosen't wait for user input

Question

I'm trying to do an interactive console using the curses lib.

similar to this :

import curses

if __name__ == '__main__':
    stdscr = curses.initscr()
    stdscr.nodelay(False)
    curses.echo()
    curses.nonl()

while True:
    stdscr.addstr('#')
    stdscr.refresh()
    command = stdscr.getstr()

    if not command:
        continue

    if command == b'xys':
        stdscr.addstr('Execute xys block and print result')

    elif command == b'qwe':
        stdscr.addstr('Execute qwe block and print result')

    # ...

But it return this :

#xys
Execute xys block and print result#
#qwe
Execute qwe block and print result#
#
#
#

(after the Execute qwe block and print result# line I pressed the enter key)

The stdscr.getstr() function only wait for input half the time. The other half command = '' without any input. This is why you see the double # sign or the # sign at the end of each output.

The expecting result should be :

#xys
Execute xys block and print result
#qwe
Execute qwe block and print result
#

Any recommendation ?

score 0 · Accepted Answer · answered May 10 '18 at 20:08

I was using the pyCharm terminal (with the run > edit configurations... > emulate terminal in output console checked) but apparently curses lib and pyCharm are not compatible.

When running the script in the normal terminal, it worked perfectly.

Hope this will help someone!

Python interactive console using curses lib getstr() function dosen't wait for user input

1 Answers1