(embedding) running Python as coprocess

[Carlos Ribeiro]

On Wednesday 19 February 2003 22:38, William Park wrote:
> Finally found 'exec' solution, thanks to Jp.  I've come up with the
> following:
>
>     import sys
>     fifo_in = sys.argv[1]
>     fifo_out = sys.argv[2]
>     while 1:
> 	fin = open(fifo_in, "r")
> 	fout = open(fifo_out, "w")
> 	sys.stdout = fout
> 	exec fin
> 	sys.stdout.flush()
> 	fout.close()
> 	fin.close()
>
> If this is called 'coprocess.py', then you can do
>
>     mkfifo in out
>     python coprocess.py in out &
>
>     echo "print 1.0+2.0" > in
>     cat out
>     echo "import math" > in
>     echo "print math.pi" > in
>     cat out

Another good candidate for our dear Python Cookbook?
-- 


Carlos Ribeiro
cribeiro at mail.inet.com.br