- 1 year ago
Start subprocess that does not block files the parent redirects to
To start a subprocess that does not block files redirected by the parent process, you can use the subprocess
module in Python along with the start
method of the Popen
class. Here's an example:
pythonimport subprocess
# Command to start the subprocess
command = ['python', 'subprocess_script.py']
# Open the subprocess without blocking file redirection
subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
In the above example, subprocess_script.py
is the script you want to execute as a subprocess. The subprocess.Popen
function is used to start the subprocess. By specifying the creationflags=subprocess.CREATE_NEW_PROCESS_GROUP
flag, you create a new process group for the subprocess. This ensures that the file redirection from the parent process does not affect the subprocess.
You can modify the command
variable to include the appropriate command and arguments for your specific subprocess.
Remember to handle the output and any errors from the subprocess as needed. You can use the stdout
, stderr
, and stdin
parameters of Popen
to redirect the standard output, standard error, and standard input streams of the subprocess.
Please note that the exact approach may vary depending on your operating system and specific requirements. The example provided above is for Python on Windows. On Unix-based systems, you may need to use different flags or techniques.