Shell script: Hello.sh
#!/bin/bash
echo "Enter your name: "
read name
echo "Hello $name"
I want to invoke Hello.sh from within python and fill variable "name" non-interactively. How can it be done?
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This is the same as your previous question.chepner– chepner2013-03-21 15:26:55 +00:00Commented Mar 21, 2013 at 15:26
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2 Answers
You should be able to Popen.communicate with the subprocess:
from subprocess import Popen,PIPE
p = Popen(['bash','./Hello.sh'],stdin=PIPE,stderr=PIPE,stdout=PIPE)
stdout_data,stderr_data = p.communicate("Hello World!\n")
Comments
+1 on the pipes. A more "shell-ish" approach would be:
import subprocess
the_name = 'the_name'
myproc = subprocess.Popen(['echo %s | bash Hello.sh' % the_name], stdin = subprocess.PIPE, stdout = subprocess.PIPE, shell=True)
out, err = myproc.communicate()
print out
3 Comments
mgilson
with
shell=True, I believe that it is preferred to pass a string, not a list.
dmg
@mgilson when
shell=True: If args is a string, the string specifies the command to execute through the shell. If args is a sequence, the first item specifies the command string, and any additional items will be treated as additional arguments to the shell itself. So it doesn't really matter.
John Teller
Thanks it worked the way I wanted it to.