I was looking in google lot of example, but none work, I print to a file that passes through an outlet pipe ms-dos, but this throws me an error as if my file could not read sys.stdin, I put the code:
import sys
line = sys.stdin
for l in line.read():
print l
and ms-dos I write the following:
ping 127.0.0.1 | pipetest.py
console above shows me that I have mistake in the line of "for" and shows this:
IOError: [Errno 9] Bad file descriptor
I use python2.7, and windows.
Instead of
ping 127.0.0.1 | pipetest.py
try
ping 127.0.0.1 | python pipetest.py
Also consider the other suggestion, you probably don't need .read()
EOFError but OP has different IOError(EBADF) error.
IOError: [Errno 9] Bad file descriptor error what the OP had. The problem you linked really results in an EOFError.EOFError and IOError(errno 9) errors are possible (the link is from the accepted answer to the question I've linked) so it might provide a solution for this case too).This works:
import sys
lines = sys.stdin
for l in lines:
print l
You might run into buffering issues though, because of how Python iterates on files. If you want to read each line right away, you should use readline() instead:
import sys
lines = sys.stdin
for l in iter(lines.readline, ''):
print l
code correct: ping 127.0.0.1 | python pipetest.py
thank Andris
