subprocess question re waiting

[loial]

I want to call a child process to run a shell script and wait for that script to finish. Will the code below wait for the script to finish? If not then how do I make it wait?

Any help appreciated.


import subprocess

command = "/home/john/myscript"

process = subprocess.Popen(command, stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, shell=True)

out, err = process.communicate()
returncode = process.returncode

 

[Alain Ketterlin]

I want to call a child process to run a shell script and wait for that
script to finish. Will the code below wait for the script to finish?
If not then how do I make it wait? [...]
process = subprocess.Popen(command, stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, shell=True)

process.wait()

-- Alain.

 

[Dylan Evans]

wrote:

I want to call a child process to run a shell script and wait for that
script to finish. Will the code below wait for the script to finish?
If not then how do I make it wait? [...]
process = subprocess.Popen(command,

stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE,
close_fds=True, shell=True)

process.wait()

Or use subprocess.call instead which does what you want.

 

[Dave Angel]

wrote:

I want to call a child process to run a shell script and wait for that
script to finish. Will the code below wait for the script to finish?
If not then how do I make it wait? [...]
process = subprocess.Popen(command,

stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE,
close_fds=True, shell=True)

process.wait()

Or use subprocess.call instead which does what you want.

-- Alain.

http://docs.python.org/2/library/subprocess.html#popen-objects

or use communicate(), which is what the OP had in the first place.

 

[Dave Angel]

I want to call a child process to run a shell script and wait for that script to finish. Will the code below wait for the script to finish? If not then how do I make it wait?

Any help appreciated.


import subprocess

command = "/home/john/myscript"

process = subprocess.Popen(command, stdin=subprocess.PIPE,stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, shell=True)

out, err = process.communicate()
returncode = process.returncode

Yes, communicate() will block until the child process is complete.

http://docs.python.org/2/library/subprocess.html#popen-objects

Note the phrase: "Wait for process to terminate." That's referring to
the shell in your case.