How to Change Python Output to PID
- 1). Open the Python source file with your preferred text editor.
- 2). Open a process and connect stdout to the PID/PIPE of the process by typing the following code at the top of your script:
import subprocess
print '\nstdout set to pipe:'
ch_proc = subprocess.Popen(['echo', '"sent"'],
stdout=subprocess.PIPE,
)
stdout_val = ch_proc.communicate()[0]
print ' stdout - ', repr(stdout_val)
This lets the calling process access output data from the other process. - 3). Open a process and connect stdin to the PID/PIPE of the process by typing this code:
import subprocess
print 'stdin set to pipe'
ch_proc = subprocess.Popen(['cat', '-'],
stdin=subprocess.PIPE,
)
ch_proc.communicate('stdin - stdin')
The code lets the calling process write data to the other process through the stdin stream. - 4). Save the script with a .py extension and execute it at the command prompt by typing:
$ python -u myfile.py
Source...