The Python subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. Use it to run a shell command or an executable in Python.
The Python subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes.
If you want to run Python code in a separate process consider multiprocessing instead.
So I'm trying to get a process to be run as a super user from within a python script using subprocess. In the ipython shell something like
proc = subprocess.Popen('sudo apach2ctl restart',
shell=True, stdin=subprocess.PIPE,
…
I have a program that interacts with the user (acts like a shell), and I want to run it using the Python subprocess module interactively.
That means, I want the possibility to write to standard input and immediately get the output from standard…
I am trying to start IPython with a non default browser (in my case Firefox)
and thought I could replicate the replicate the script given in this blog
I am on Windows 7
I put the following code in a file say "module.py"
import…
I have a small issue that I'm not quite sure how to solve. Here is a minimal example:
What I have
scan_process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
while(some_criterium):
line =…
I want to gzip a file in Python. I am trying to use the subprocss.check_call(), but it keeps failing with the error 'OSError: [Errno 2] No such file or directory'. Is there a problem with what I am trying here? Is there a better way to gzip a file…
I'm working on a nifty little function:
def startProcess(name, path):
"""
Starts a process in the background and writes a PID file
returns integer: pid
"""
# Check if the process is already running
status, pid =…
I'm wondering if this is the correct way to execute a system process and detach from parent, though allowing the parent to exit without creating a zombie and/or killing the child process. I'm currently using the subprocess module and doing…
I am using subprocess.check_output from pythons subprocess module to execute a ping command. Here is how I am doing it:
output = subprocess.check_output(["ping","-c 2 -W 2","1.1.1.1")
It is raising a CalledProcessError and says the output is one of…
I am trying to understand the lower level implementations of python 3. There is one module named _posixsubprocess used by the subprocess module. I tried to find the location of this module in my system and found that it's a stub file.
Could someone…
I need to launch a number of long-running processes with subprocess.Popen, and would like to have the stdout and stderr from each automatically piped to separate log files. Each process will run simultaneously for several minutes, and I want two log…
Is there a simple way to run a Python script on Windows/Linux/OS X?
On the latter two, subprocess.Popen("/the/script.py") works, but on Windows I get the following error:
Traceback (most recent call last):
File "test_functional.py", line 91, in…
I've got a long running, daemonized Python process that uses subprocess to spawn new child processes when certain events occur. The long running process is started by a user with super user privileges. I need the child processes it spawns to run as…
I have a case to want to execute the following shell command in Python and get the output,
echo This_is_a_testing | grep -c test
I could use this python code to execute the above shell command in python,
>>> import subprocess
>>>…
I would like to direct a python script's subprocess' stdout and stdin into the same file. What I don't know is how to make the lines from the two sources distinguishable? (For example prefix the lines from stderr with an exclamation mark.)
In my…
On Windows, subprocess.Popen.terminate calls win32's TerminalProcess. However, the behavior I see is that child processes of the process I am trying to terminate are still running. Why is that? How do I ensure all child processes started by the…
