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Measuring maximum memory while capturing stdout in Python using subprocess

Measuring maximum memory while capturing stdout in Python using subprocess Question: Is there a clean way to measure the maximum memory consumption of a subprocess while still capturing stdout (and ideally setting a timeout) using subprocess in Python? Capturing output and setting a timeout can easily done using functions of subprocess: output = subprocess.run(cmd, capture_output=True, …

Total answers: 1

Ways of supress prints from joblib parallelization

Ways of supress prints from joblib parallelization Question: I have a script that contains parallelization. Can I suppress the parallelization prints with a simple contextlib suppressor or do I have to initialize a mute in the subprocesses with. from joblib import Parallel, delayed import os import contextlib def start(): print(‘HELLO’) def para(i): print(‘hello’) a = …

Total answers: 1

python buffering in sys.stdout

python buffering in sys.stdout Question: Minimal example: def main(): for i in range(100): print("One line every 2s", end = "n") time.sleep(2) if __name__ == ‘__main__’: with open("log.out", ‘w’) as out, open("log.err", ‘w’) as err: sys.stdout = out sys.stderr = err main() I want the print statements to be written toe the stdout file after every …

Total answers: 3

Capture real time `stdout` and `stderr` when run a function in a process python

Capture real time `stdout` and `stderr` when run a function in a process python Question: I have a python function and want to run it as a separate process with multiprocessing package. def run(ctx: Context): print("hello world!") return ctx afterward running it as a separate process with the following script: import multiprocessing p = multiprocessing.Process(target=run, …

Total answers: 1

How to monitor subprocess's stdout in real time

How to monitor subprocess's stdout in real time Question: I have a subprocess that generate images. A main programe will consume images. My plan is to launch subprocess, monitor it. Once there are several images available (i.e. subprocess printed ‘2’ or ‘3’), I will start main programe. However, I fail to get ‘real-time’ output from …

Total answers: 1

python subprocess does not write the output

python subprocess does not write the output Question: I have the following code snippet as a Python script. I get the proper job output files with no errors. However the stdout subprocess log files (i.e. COSMOSIS_output_XXX.txt etc) don’t store the expected runtime logs. Instead, these files have <_io.TextIOWrapper name=9 encoding=’UTF-8′> as the only output written …

Total answers: 3

Python default and multi level logging

Python default and multi level logging Question: From what I read and understood, Python logging module by default logs to stderr. If I run this python code: import logging logging.info(‘test’) logging.warning(‘test’) logging.error(‘test’) logging.debug(‘test’) as python main.py 1> stdout.txt 2> stderr.txt I get my logs in stderr.txt and nothing in stdout.txt – my logs are redirected …

Total answers: 2

Redirect standard output to variable from method with `sys.stdout.write()`

Redirect standard output to variable from method with `sys.stdout.write()` Question: I want to use an external library and redirect their output, but the library uses a function represented below as msg. I tested some other stdout methods (all of them are in the minimal example below) and all of them are redirected. I also try …

Total answers: 1

How to fix double output in python

How to fix double output in python Question: How do i fix a bug where Hello world! is printed twice? The output: {clear}Hello World! {clear}{clear}Hello World! The terminal is cleared [Finished in 3.4s] The code: messages = [] def render(): os.system("cls") for msg in messages: print(msg) def msg(message:str): messages.append(message) render() def clear(): messages = [] …

Total answers: 2