A more elegant way to flush print buffer?

[Yu Wang]

Chuck Swiger wrote:
> Teemu Luojola wrote:
> 
>> Is there any other way to flush the print buffer than to call 
>> sys.stdout.flush()?
> 
> 
> "print buffer"...?  There's no other way to flush stdout than doing the 
> call, but there are better ways to draw an animated windmill character 
> than writing backspaces and flushing.
> 
>  > Take as an example a simple "windmill" practice,
> 
>> like the following:
> 
> 
> A long time ago, someone clever decided to figure out how to draw 
> characters and move around the screen quickly in a platform-independant 
> fashion: this is how termcap and curses came about.  Using the following 
> semantics works much better, or at least the C version does:
> 
>     --
> 
> import curses
> from curses import wrapper
> 
> def mvaddch(x,y,char): curses.wrapper('mvaddch',y,x,char)
> def wrefresh(): curses.wrapper('wrefresh',0)
> def FIXCURSOR(): """NA: was used to move the cursor back to another 
> panel (for user input) to avoid flicker"""
> def EDELAY(): """NA: was used to delay for 50 milliseconds via usleep()"""
> 
> def explode(x,y):
>     """Draw an ASCII explosion at position x,y"""
>     for index in range(7):
>         mvaddch(x,y,'-')
>         wrefresh()
>         FIXCURSOR()
>         EDELAY()
>         mvaddch(x,y,'\\')
>         wrefresh()
>         FIXCURSOR()
>         EDELAY()
>         mvaddch(x,y,'|')
>         wrefresh()
>         FIXCURSOR()
>         EDELAY()
>         mvaddch(x,y,'/')
>         wrefresh()
>         FIXCURSOR()
>         EDELAY()
> 
>     mvaddch(x,y,'*')
>     wrefresh()
>     EDELAY()
>     mvaddch(x,y,'x')
>     wrefresh()
>     EDELAY()
>     EDELAY()
>     mvaddch(x,y,'.')
>     wrefresh()
>     EDELAY()
>     FIXCURSOR()
> 
> if __name__ == "__main__":
>     explode(10,20)
> 
> ...only, how does one invoke the underlying curses implementation of 
> mvaddch and such from Python?  Calling curses.wrapper didn't do what I 
> expected, clearly enough.
> 
> -Chuck
> 
> 
Glad to see a differnt implementation of flush()
But....it doesn't work on my Linux /Python2.2.2 environment.
Since I'm not at all familia with curses,I would get more information 
from you experts.

errors like this:
File "/usr/local/python/lib/python2.2/curses/wrapper.py", line 44, in 
wrapper
     res = apply(func, (stdscr,) + rest)
TypeError: 'str' object is not callable


> 


-- 
Love Your Family!
Yu Wang