Subprocess pipes stdin without using files
pipe, process, python
Solution
First, use `subprocess.Popen` - `.call` is just a shortcut for it, and you'll need to access the `Popen` instance so you can write to the pipe. Then pass `subprocess.PIPE` flag as the `stdin` kwarg. Something like:
import subprocess
proc = subprocess.Popen('shell command', stdin=subprocess.PIPE)
proc.stdin.write("my data")
http://docs.python.org/2/library/subprocess.html#subprocess.PIPE
Problem
I've got a main process in which I run a subprocess, which stdin is what I want to pipe. I know I can do it using files: ``` import subprocess subprocess.call('shell command', stdin=open('somefile','mode')) ``` Is there any option to use a custom stdin pipe WITHOUT actual hard drive files? Is there any option, for example, to use string list (each list element would be a newline)? I know that python subprocess calls `.readline()` on the pipe object.