Question

I have a python script which calles a bash script.
The bash script compiles several modules and I would like to seethe result of the compilation printed on screen while running.

Most important, anyway, is that the bash script requires a run time quite some few input from the user.
How can I make my python script give stdin/stdout to the bash script?

For the moment I am using

(_stat, _resl) = commands.getstatusoutput("./myBashScript")

but in this way the user is not promped of anything while the bash is running…

Cheers

Answer 1

If you use subprocess (as you should!) and don’t specify stdin/stdout/stderr, they’ll operate normally. For example:

# lol.py
import subprocess
p = subprocess.Popen(['cat'])
p.wait()

$ python lol.py
hello
hello
catting
catting

You could also process stdout as you like:

# lol.py
import subprocess

p = subprocess.Popen(['cat'], stdout=subprocess.PIPE)
p.wait()

print "\n\nOutput was:"
print p.stdout.read()

$ python lol.py
hello
catting

^D

Output was:
hello
catting