mirror of
https://github.com/python/cpython.git
synced 2024-12-01 03:01:36 +01:00
24 lines
500 B
Python
24 lines
500 B
Python
|
# Testing select module
|
||
|
|
|
||
|
|
def test():
|
||
|
|
import select
|
||
|
|
import os
|
||
|
|
cmd = 'for i in 0 1 2 3 4 5 6 7 8 9; do date; sleep 3; done'
|
||
|
|
p = os.popen(cmd, 'r')
|
||
|
|
for tout in (0, 1, 2, 4, 8, 16) + (None,)*10:
|
||
|
|
print 'timeout =', tout
|
||
|
|
rfd, wfd, xfd = select.select([p], [], [], tout)
|
||
|
|
print rfd, wfd, xfd
|
||
|
|
if (rfd, wfd, xfd) == ([], [], []):
|
||
|
|
continue
|
||
|
|
if (rfd, wfd, xfd) == ([p], [], []):
|
||
|
|
line = p.readline()
|
||
|
|
print `line`
|
||
|
|
if not line:
|
||
|
|
print 'EOF'
|
||
|
|
break
|
||
|
|
continue
|
||
|
|
print 'Heh?'
|
||
|
|
|
||
|
|
test()
|