Python wait until data is in sys.stdin

Question

my problem is the following:

My pythons script receives data via sys.stdin, but it needs to wait until new data is available on sys.stdin.

As described in th

Answer 1

Well i will stick now to these lines of code.

#!/usr/bin/python
import sys
import time
while 1:
    time.sleep(0.01)
    for line in sys.stdin:
        pass # do something useful

If i don't use time.sleep, the script will create a too high load on cpu usage.

If i use:

for line in sys.stdin.readline():

It will only parse one line in 0.01 seconds and the performance of the apache2 is really bad Thank you very much for your answers.

best regards Abalus