subprocess Questions
4
Solved
I'm trying to generate a requirements.txt file programatically. This way I can diff it against a second .txt file. So far I've tried the following, but they only output the requirements to console ...
Powel asked 20/6, 2014 at 7:18
6
Solved
I would like to execute multiple commands in a row:
i.e. (just to illustrate my need):
cmd (the shell)
then
cd dir
and
ls
and read the result of the ls.
Any idea with subprocess module?
Up...
Naxos asked 11/12, 2008 at 13:30
5
Solved
I need to do something like this post, but I need to create a subprocess that can be given input and give output many times. The accepted answer of that post has good code...
from subprocess impor...
Annunciate asked 19/2, 2015 at 20:13
4
Solved
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 si...
Simdars asked 25/2, 2010 at 3:8
2
Solved
I have a executable which requires a tty (as stdin and stderr), and want to be able to test it.
I want to input stdin, and capture the output of stdout and stderr, here's an example script:
# test...
Premillenarian asked 23/10, 2018 at 16:56
6
I've been trying to understand for a while now what's the difference between subprocess.call and subprocess.run. I know the last one is new on Python 3.5 and both are based on subprocess.Popen, but...
Northernmost asked 19/11, 2016 at 20:30
32
Solved
I'm using the subprocess module to start a subprocess and connect to its output stream (standard output). I want to be able to execute non-blocking reads on its standard output. Is there a way to m...
Langtry asked 17/12, 2008 at 17:56
11
Solved
I am using subprocess to call another program and save its return values to a variable. This process is repeated in a loop, and after a few thousands times the program crashed with the following er...
Ichabod asked 13/5, 2013 at 16:23
2
Solved
I have the class InternalProc, defined as following:
class InternalProc:
@staticmethod
def get_data():
try:
result = subprocess.run(['bridge-client', '--business-credentials'],
stdout=subproc...
Bludgeon asked 23/2, 2021 at 11:11
10
Solved
I'm currently launching a programme using subprocess.Popen(cmd, shell=TRUE)
I'm fairly new to Python, but it 'feels' like there ought to be some api that lets me do something similar to:
subproce...
Sexdecillion asked 5/4, 2010 at 23:45
2
Solved
I found a number of questions which looks like mine, but which did not produce a solution I can use (closest is: subprocess output to stdout and to PIPE)
The problem: I want to start a process usi...
Supposing asked 10/4, 2015 at 9:38
9
Solved
I've looked at a number of questions but still can't quite figure this out. I'm using PyQt, and am hoping to run ffmpeg -i file.mp4 file.avi and get the output as it streams so I can create a progr...
Milicent asked 3/10, 2011 at 8:20
3
Solved
I have a some Python code that occasionally needs to span a new process to run a shell script in a "fire and forget" manner, i.e. without blocking. The shell script will not communicate with the or...
Kilt asked 17/12, 2013 at 23:7
4
Solved
I am trying to use the subprocess module in Python to communicate with a process that reads standard input and writes standard output in a streaming fashion. I want to have the subprocess read line...
Manolete asked 31/7, 2011 at 22:5
4
Solved
Is it possible to modify code below to have printout from 'stdout 'and 'stderr':
printed on the terminal (in real time),
and finally stored in outs and errs variables?
The code:
#!/usr/bin/pyt...
Meniscus asked 19/6, 2013 at 11:38
3
Solved
I am using the subprocess module like that:
ping = subprocess.Popen('fping.exe 192.168.2.3 196.65.58.69', stdout=PIPE)
output = ping.stdout.readlines()
I am need the output list in order to proc...
Nadiya asked 25/3, 2012 at 10:28
6
I'm using subprocess to run a command line program from a Python (3.5.2) script, which I am running in a Jupyter notebook. The subprocess takes a long time to run and so I would like its stdout to ...
Evangelist asked 27/7, 2016 at 14:36
4
Solved
I am using Python and it's subprocess library to check output from calls using strace, something in the matter of:
subprocess.check_output(["strace", str(processname)])
However, this only gives...
Scrapbook asked 8/1, 2019 at 11:59
5
Solved
I am looking for the way to call shell scripts from python and write their stdout and stderr to file using logging. Here is my code:
import logging
import tempfile
import shlex
import os
def run_...
Anamorphosis asked 22/2, 2014 at 11:44
7
Solved
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(so...
Toulon asked 25/5, 2012 at 14:38
3
Details error message:-
FileNotFoundError
[WinError 2] The system cannot find the file specified
at ~\AppData\Local\Programs\Python\Python39\lib\subprocess.py:1582 in _execute_child
1578│ sys...
Surinam asked 1/8, 2022 at 11:42
2
Solved
I was reading up on Python Memory Management and would like to reduce the memory footprint of my application. It was suggested that subprocesses would go a long way in mitigating the problem; but i...
Hight asked 29/5, 2014 at 15:38
6
Solved
I am using:
grepOut = subprocess.check_output("grep " + search + " tmp", shell=True)
To run a terminal command, I know that I can use a try/except to catch the error but how can I get the value ...
Friendship asked 2/5, 2014 at 4:54
5
I have some custom commands.
This works:
subprocess.Popen(['python'], stdout=subprocess.PIPE)
But if I have my own system commands like deactivate, I get that error
Traceback (most recent call las...
Henna asked 29/3, 2012 at 23:38
4
Solved
After I went through the documentation for Node.js Child Processes, I was curious If it would be possible to pass a Buffer to this Process.
https://nodejs.org/api/child_process.html
For me it see...
Boarish asked 19/6, 2015 at 12:6
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